I know it is popular to be like "How can he use his time thinking about this stuff" but as someone that coached FB forever, we talk about a ton of stuff that is not just about X's and O's, just like all of you with your jobs.
Most of these conversations are the players stopping in and shooting the **** for 15 minutes. In HS they talk about classes, girls, cars, jobs, family...video games...It really doesn't interfere all that much.
The general rule is...if the coaches office door is open, feel free to come in. if it is closed, knock and have a really good reason.
Like, you think Kiffen is going to tell his players to stop coming in to offer condolences today because he is busy drawing up a FB trap?
Coaches are people too.