I assume this is more of a political miscalculation. Advocates of freedom of speech & from government oversight could argue that this sort of service is a good

I assume this is more of a political miscalculation. Advocates of freedom of speech & from government oversight could argue that this sort of service is a good thing regardless. As in, yes people will share illegal content but enforcement of that should happen outside of the encrypted transfer, and the right to encrypted transfer for everyone should be protected. I assume this is broadly what Mozilla believe. They may have miscalculated their ability to ideologically separate the service from the content, legally or in popular opinion.