I don't know whether you would call the author a supporter yet, but from the article, with respect to an issue that matters for gamers:
"And now you have done something X11 cannot do - eliminated screen tearing with the absolute minimum latency cost possible.
"This [is] fantastic.... And like, this is the first time I’ve ever seen the vsync setting in a game actually sync the game up with the vblank interval in a way that matters. It works for games in wine. It’s amazing. I have never experienced gaming on Linux that looked this smooth in my life."
"And now you have done something X11 cannot do - eliminated screen tearing with the absolute minimum latency cost possible.
"This [is] fantastic.... And like, this is the first time I’ve ever seen the vsync setting in a game actually sync the game up with the vblank interval in a way that matters. It works for games in wine. It’s amazing. I have never experienced gaming on Linux that looked this smooth in my life."