Quoting zap (calmstorm@???):

> I think he meant, threatened the way most people mean threatened, like a
> demand not to do something or else.

It was just a little vague, and I was interested in the 'or else'.
Also, I think misbehaviour from Mozilla Corporation would be of broad
interest generally, even for projects intending to use only derived
codebases. Anyway:

> Regardless though, Waterfox is well worth replacing firefox in the
> repo.  At least in the unstable/testing if nothing else, alas waterfox
> has no ESR version yet.

Waterfox does seem like a reasonable near-term plan for the project
(IMO).