Let's test what you say here, knowing that you didn't use google prior to making these comments. I'm certainly not seeing the "size discrepancy that you are discussing. With regards to attrition, there was some, in the likes of Davidikov, Britt...It isn't like we haven't seen that now, Cody Fox and Myslinski (similar to Britt) right off the bat.
The switch to motion, RPO, and mid-zone scheme made a drastic difference in the offense. It allows lineman to get down field to hit LBs, doesn't force unison blocking, with far better versatility against varied fronts. As always, Iowa needs a threat at QB both in the run/throw, but there were immediate effects of the change of blocking scheme.
2022-2023
LT: Mason Richman: 6'6" 308 pounds. (So)
LG: Connor Colby: 6'6" 308 pounds (returning freshman all-American) (So)
C: Logan Jones: 6'3" 283 pounds (So)
RG: Nick Dejong 6'6" 300 pounds (Jr)
RT: Jack Plumb 6'7" 298 pounds (Sr)
vs
2025-2026
LT: Trevor Lauck 6'5" 310 pounds (So)
LG: Beau Stephens 6'5" 315 pounds (Sr)
C: Logan Jones: 6'3" 302 pounds (GR)
RG: Kade Pieper 6'4" 290 pounds (So)
RT: Gennings Dunker 6'5" 315 pounds (Sr)
vs
Projected 2026-2027
LT: Trevor Lauck 6'5" 310 pounds (Jr)
LG: Leighton Jones 6'2" 288 pounds (Jr)
C: Kade Pieper 6'4" 290 pounds (Jr)
RG: Lucas Allgeyer 6'5" 300 pounds (rsFr)
RT: Jack Dotzler 6'6" 300 pounds (Sr)
Bro, the point is where the '22 Iowa lineman were in their own personal developments. They all ended up putting on weight and, more importantly, strength.
You might as well compare '22's weights to the weights of any o-line in football.

Going to find a lot of lines with a lot of guys somewhere around 300 lbs.
Jones 19 lbs heavier as a senior. Stephens put on 15. Elsbury 8. Richman and Colby both added a handful of lbs. (All differences over the '22 weights you gave)
There's a difference between good and bad weight. And each player carries and uses his weight differently. What gets developed is a man/pound-for-pound strength, that's essentially power per square inch.
Guys have to develop into their bodies. And quite often for Iowa o-lineman, that has been a several year process. They've often taken undersized lineman with good feet and built them up. But even their heavier recruits have tended to be more mobile than strong, and have needed development in the weight room.
Guys during that time had their weight room development stunted by the covid shutdown. Most significantly, probably with the Jones, Richman, Elsbury class. They were incoming freshmen that season. And on top of that, Iowa lost Doyle at that time, which put the strength and conditioning program into a transition period, at best. It's fair to say guys didn't get the typical level of benefit from strength training that season. Those guys couldn't have started on a worse foot.
Imagine Jones' case. Comes in (as DL) at 267 lbs, after his covid/Doyle less compromised summer. Redshirts. Then misses most of Fr season with injury. Then switches to center as a sophomore. You don't think he was underdeveloped?
Then consider the Colby, Stephens, Dunker, Myslinski class. They all missed strength training in the summer before their senior years in high school, due to covid shutdown. Also a critical time for physical development. Some of those guys may have missed the entire season. I'm not sure.
But basically, guys during this time period were maybe 4-12 months behind in their development. A sophomore, for example wouldn't have been as strong as a typical sophomore.
This dynamic existed at every program. But those guys weren't forced into early action at other programs. Again, it was MASS attrition at Iowa. As I stated earlier in the thread, it could be argued to have been EIGHT o-lineman, that were at one time projected to be rotational players, that did not take a single snap in '22. And again, the guys at Iowa during that time, probably didn't get the best version of Iowa's strength and conditioning program, either.
I don't know why you've downplayed the amount of attrition. You don't seem to be completely clueless. So let me guess: you either were already frustrated (before '22) by an Iowa offense that wasn't entertaining enough for you; or you have a sensitivity to nepotism; or both.
Again, yes mid-zone and motion has helped. Iowa really hasn't even run that much rpo yet, under Lester. But you think mid-zone and motion turned many of the same guys from members of the worst o-lines I've seen at Iowa, into pros and Joe Moore winners?

Stop. What's wrong with the truth? These guys were forced into action long before they were ready.
Again, It's exactly what KF told us at the time. Said there would be no quick fix. Since that time, KF, Barnett, and o-lineman have all commented on not getting stronger overnight. And again, KF told us before Lester was even hired, that the offense would take a jump in '24 because he expected the o-line would be in a good place.
Scheme and motion do not help an o-lineman displace the guy lined head-up in front of him. Did you see that displacement in '22? No. Did you see it a couple years later? Yes. That's really all I needed to say, from the start.
There is truth to what you say. But it, at the same time, is a mischaracterization.
And that's my main point with all of this. The broken offense, and even the broken line that stalled the offense, and BF's and KF's role in that, have been widely and throughly mischaracterized.
That's amounted to mass negativity that was not justified. And that's part of my overarching point. Negativity in the community reached an all-time high during the last season ('23) of KF's most winningest stretch at Iowa. That is a fact. And is something that can never be justified by fans.
Fans could have done, and can do, better