DEI has always been in companies before the term even arose to the larger public discourse. I have to go through such trainings every year at every company I've been at. There has never been true "diversity of thought" at most institutions and I doubt you would really want it, especially if you were on the receiving end of it every day and it was just blatant bigotry towards you. As far as achievements, I can't recall a single instance of someone being brought down because of a participation award. Unless you think being 1st, 2nd, or third gets robbed of all meaning because everyone got an award.