no slippery slope argument is a fallacy when the underlying process can best be described as a slippery slope. "Slippery slope" is not a fallacy, it's an analogy.
I'm in favor of crypto, privacy and the same things you are... I just don't lie about it: criminals are more interested in crypto than the average citizen, so are kiddy pornographers (for those of you who don't think that's a crime). So are "chinese dissidents", but seriously, there are more criminals out there.
my arrogance comes from my ability to be both smart and honest rather than a propagandist.