Since the start. Forget working with them, it's a rough go to even try and communicate with them.
And that goes back to mailing list days, creating a personal grudge against Gnome so firm that I haven't used it since the early 2000s.
Thankfully there's KDE for my general use and a wide variety of lightweight options for other uses.
I think his screeching about "woke" and "PC culture" is just his code for "I really want to fuck some kids and I don't think I can get away with it now".