Yes and no.
If a dev could retain his highest monthly earnings, of course I'd agree with you.
But there are 2 huge negative outcomes : these monthly earnings get decimated (could easily have lost 80%+ in a few months ; Patreon decides to outright ban ALL the porn devs.
The community may well have to wait it out that long. Feel free to become a full-time pirate until then.
But what is Patreon really. Its just a crowd-funded sight. Devs go there because it's well known. Devs do all the work and essentially Patreon gives them credibility and a place to advertise. Or am I wrong about this.
The thing about a new site, is that it will need big titles to make a name brand of themselves. And if the bigger game developers, basically the ones that can do this as a living, then that would lead to a huge payoff and could/should bring them the smaller ones as well. And sure, they are looking at a niche market. Basically porn game developers, but if anything this site has shown is that there a lot of developers out there.
Which is why I'm suggesting that they all get together to decide where to go and who to back. They'd give that new site proven product and essentially credibility, and by extension show other developers where to land.
Granted, choose wrongly and the site goes under and doesn't pay you, or they have try to take control of the stuff the developers create.
Personally, I think it's a mistake for developers like MrDots to stay with Patreon at this point. Because they could easily change their policy completely away from porn. Further, abandoning projects that have people already invested in said projects, like DmD, are people really going to want to start over on a new project when what they wanted and the reason they gave money was for the payoff that hasn't happen, but was (after 1.5yrs) finally starting to happen.
Granted, this isn't just a sheer abandonment of the game in the classic sense, MrDots' hands have been cut off in regards to DmD and that wasn't foreseeable, but if he chooses to try another one, as he seems to be, then it'll be much harder to get funding. He'll alienate lots by this, further, I think people will be skeptical of supporting Patreon after this as well.