[yuliyp]

> Has nothing to do with union protections.

Preventing employer retaliation for discussing the conditions of employment are a pretty significant part of the protections around unions. An open letter discussing the conduct of the CEO falls under discussion of the conditions of employment.

There are limits to what companies can do to try and prevent unions from forming. SpaceX is claiming that those restrictions and the way in which they're enforced by the NLRB are unconstitutional. Seems pretty fair to characterize that as something which would bust up some federal union protections.