It's very real. I have friends in the industry working on a Netflix series, and the amount of political correctness being forced on them from the Netflix side is insane.
I cannot give a specific example due to exposing which show this may be on, but if the stories I hear or true, the Netflix staff must do a lot of Yoga cause the stuff they force to change is a stretch.
The artists I know on the show went from being excited, to just there for a paycheck after certain fruits were deemed racist around black characters (not watermelons), and a LGBT plotline was forced into a childrens show just because.
The info you've supplied doesn't support your premise. You say "it's very real," but you admit you cannot cite a single example, and your only evidence is some vague hearsay.
Hearsay is this a courtroom? I'll cite an example : the entire front page of Netflix is an agenda. When they removed ratings I knew it was going downhill.