That's a good point, I can edit that for clarity in the article (especially since I mentioned Godot's Patreon support later in the article). I was assuming that the Patreon support didn't amount to full time support for all the devs that contribute, but I don't know if that's true or not.

Either way, it seems a lot of people have contributed without sponsorship, but the main devs are (hopefully) compensated.