He found a niche in the market and exploited it, I wouldn't think he's obligated to donate any money he's made to anything. He's a douche and a tool, but his customers are the problem, not him. He's straightforward about what he's doing.

The original pride flag was a reworked version of the PACE flag that had been in use since the 60s, itself based on the Cursillo banners first used sometime in the late '40s.