You answered your own question, in the same sentence. When I'm working on a project, the first rule to get shit done is to stop participating in pointless threads. *Especially* when facing FUD, because FUD is not stopped by talking - every word you throw out will just get twisted and do nothing to defuse the FUD. It is stopped by showing results.

(of course, that is assuming they actually do end up showing results; it is of course also possible they haven't done shit, but my point is that there's nothing strange with silence in this kind of situation)