It's pretty common among conservatives to blast Republican members of Congress for doing nothing but talking and holding hearings. The unfortunate political reality is that sometimes, they don't really have the effective power to do much more than that when the other party controls the White House.
Congress deserves some credit for this Pentagon DEI backpedaling. Aggressive questioning of civilian and military leadership brought to public light DEI practices that offended many Americans, and which the brass could neither defend nor justify. Generals who claimed that this stuff wasn't happening were ut on the spot under oath, and got stuck.
Score one for the good guys.