He's already shown that he is willing to support his stuff without additional payment, he's done so with CodeMirror. When taking on this project, he presumably

He's already shown that he is willing to support his stuff without additional payment, he's done so with CodeMirror. When taking on this project, he presumably factored it in, that he'd want to continue to support it. If not, well, those of us who chipped in probably won't chip in on the next thing he does. I'm willing to take that risk. And even if he doesn't...so what? It's open source. Other people can continue the work, and if they want to do something ambitious enough to justify crowdfunding as well....more power to them. You may be right that what he is doing isn't "in line with the OSS movement/culture." Richard Stallman would likely agree with you...he was never one for shades of gray. I would argue that if that is true, that the OSS movement/culture is the thing with the problem.