Based on the "maybe the porn industry isn't for me" part I was presuming that the threat was to dump FD and then go make SFW gacha games. He probably would retain some of his Patreon for a time, I've seen creators who haven't posted in years that still have subscribers, but it would undoubtedly drop like a rock if he moved away from porn games entirely and I doubt he'd be able to leverage his existing Patreon account for a SFW project unless he was willing to scrub it.I think if he were to abandon this game and make another game some people would stop paying him but that loss would be nothing compared to the completely new people that would start paying him based on the artifically created hype by helius and his bootlickers. Majority of people don't care enough to check if developer has done shady things in the past so they would gladly pay him based on his promises alone.
Although having said that I think Helius' issue seems to be that he just outright isn't a good developer or project manager, so I don't see why he thinks he would succeed in making gacha mobile games which isn't exactly an uncompetitive market.