https://juicyloop.net/news_1/Here is the post they made about it. In the comments they give the exact answer:
So why didn't they just leave the patreon? Many devs did and now they're doing just fine! Still sounds a bit fishy...
That I can't answer for them. Maybe Patreon will freeze founds they have or maybe they just don't want to use other platforms (in fairness other platforms also have their own problems)
