This PC treatment began in earnest under former President George W Bush. Many, many articles were here on FR concerning the policies of that Administration.
This is not new, it is just now in the hands of exploiters of it ... liberals.
My son was in bubba’s army. PC dictated ALL promotions.
Race and gender before merit.
This did wonders for morale. Every officer who could leave, did so.
What you had left is what passes for leadership now.
IIRC the Clintons did some PC moves with military policy.