Radek may have legitimate gripes...we don't know enough detail to judge. I think a lot of the pushback he's getting is due to him joining the forum, making an introductory post, then immediately unloading a long list of grievances in a couple of threads (with some significant details omitted), without taking time to assimilate into the community a bit. That's some people's way...
There are plenty of examples of nonprofits that support very worth causes getting derailed, at least for a time, by leadership that treats the organization as a personal piggy bank. I'm not at all suggesting that's the case here; I'm a member of EAA, but don't have the foggiest idea of what actually transpired. But it's always something to watch out for.