PBS and PBR can still attack Fox after they lose their government funding. They will just have to do it by competing in the market place of ideas. The same goes for their other programing.
I’m know huge PBS/NPR fan, but some of their programming is pretty good. My guess is that they’ll do fine without government money and in some cases do better than ever with some corporations and rich donors.
Going around and acting like they’ve been muzzled or ‘shut down’ is just silliness.