I'm not a fan of the "snitching" rhetoric that suggests it's bad for people to report

Such hotlines aren't themselves First Amendment violations, of course, unless they lead to coercive or discriminatory action against constitutionally protected speech, or at least the threat of such action.

Still, they do create possibilities for abuse, for instance if the resulting data is at some point used to threaten the accused speakers.

And I think they tend to create unrealistic expectations: After all, if the state says it wants you to report certain behavior, and tells you that it's bad behavior, wouldn't you expect that the state would actually try to do something about it?.