Good on the developer. The users complaining are really a bunch of spoiled children. Someone provides you with a free product, a donation button is introduced and you start whining incessantly.

Anti Commercial-AI license

Sad but understandable. I saw the donation button but I don’t have spare money atm.

Oh shit, I didn’t notice there was one going on and oh shit² that they are quitting.

Good luck GNOME users! If Xfce ever added a donation button I would not be donating again.