Wouldn't they be the black mark of the FOSS community for accepting money from a known bad entity? I also think this is discounting a big problem in the FOSS community, volunteers giving years of their free time on passion projects while dealing with angry users and not getting one cent out of it.
I routinely see people bitching about OBS and its devs for not being utterly perfect for their setup because they forget that once upon a time XSplit used to be the only good option. How much have they paid for OBS? zero. If company X comes and says "hey I can actually give you a living wage to work on your passion project" I think it's in some case reasonable to see their loyalty to whiny end users to be quite fragile.