I think it's happening because of the extreme content filtering in place, at some point it was even refusing to generate some code because it thought it went against its guidelines to write code.
I definitely think this is playing a role. I've seen reports of people saying "oh it now refuses to act as my therapist" and "it wouldn't write my essay for me". Those are just a couple of anecdotes I've seen on Reddit, and haven't verified myself, but it wouldn't surprise me if OpenAI felt the need to make adjustments along those lines.
