I'm not an expert in this stuff, but I did notice that the Ladybird website mentions only accepting unrestricted donations. That doesn't prevent power dynamics from evolving between sponsors and the project, of course, but it at least means that no sponsors get to explicitly demand specific things.
I think it's a valiant cause but even if that's what they claim right now, eventually they will have to weigh whether it's worth taking the $100k donation from sponsor A who doesn't demand working on feature X but just suggests it or risk the future runway of the project.