The state reluctantly allows people to poison themselves (caffeine, sugar, tobacco, alcohol), but there's a principled difference between having the choice to have an actual medical procedure supported by the healthcare industry, and eating horse dewormer because you've been deluded by liars and you think it'll protect you from a pandemic-causing disease (vs intentionally eating it because you want to get buzzed/high/drunk off it). You don't have to agree with that viewpoint, but it's intellectually dishonest to frame it as faith vs principal.