Ok I see that it is quite unrealistic to go community-wide with a Javascript boycott (and I was talking about developers, not users). It's just that singling out Firefox to me seems so arbitrary.
Now the target is Firefox, the last big independent browser, even though it was _Mozilla Corporation_ (not the foundation) that made the wrong choice. Mozilla Corporation is IMO the place were pressure should be applied.
I realize now that this is probably what annoyed me most about how this affair developed. I am quite attached to Firefox and was rather surprised that it became a target in a scandal that revolves around a stupid move by Mozilla Corporation.
(BTW, this is just one difference, one that I haven't seen anyone else pointing out, whilst other, just as good - if not better - differences have been identified in this very post)