You're posting a screed by the lawyers representing the plaintiffs in this suit, which is bound to be biased. Also, the biographical test for ATCs was dropped in 2018 (and in 2024 for the rest of the FAA), so even if it had been an issue in rejecting some meritorious applicants (not clear it was, as it was only a screening tool, not a final hiring tool), surely there has been time enough to bring on more ATCs since then by both the Trump and Biden administrations.
In addition, the rigorous testing requirements to become an ATC have not really changed, i.e., unqualified air traffic controllers were never hired to meet diversity goals. And while there was certainly some emphasis on increasing diversity in the FAA ranks, clearly those efforts didn't change much, as white men made up 59% of the FAA workforce in 2016, 57% of the workforce in 2020 and 55% of the workforce in 2023 Let's see what comes out as evidence in the lawsuit.
https://www.bbc.com/news/articles/cwyeg61pnl5o