I'll give you my view from inside a fairly large corporation.
This stuff is coming from HR and probably marketing. HR departments have been pushing this stuff for years. The leaders go to conferences where they hear about how this needs to be done and taught. They then come back and tell the CEO they need to do this, and they are off to the races. Inclusion, micro aggressions, yada yada yada...
I am guessing there is a similar dynamic going on in Marketing. As the largest corporations start, it gets easier for the next tier of corporations marketing departments to convince their management that they need to follow suit.
It isn't coming from young employees. Unless it is a tech company, most of the workforce is probably not that young to begin with.
Agree! HR is a department that creates nothing...