I agree. If by "poisoning" they mean people making insolts or dispatching flying penises in Second Life or stuff like that, then it's a bill too far. But if by "poisoning" they mean launching flickering images on an epilepsy forum to try to cause seizures, "doxxing", making legitimate rape and murder threats, etc, then I think it's absolutely justified. All too often is there the assumption that what happens online doesn't warrant enforcement, even if it's something that crosses over into the real world.
Everyone has the right to free speech, but it ceases being free speech when it crosses certain bounds (shouting fire in a crowded theatre, incitement to violence, solicitation of criminal activity, etc). All of these cases are nuanced and require careful balance, but what they should not be is ignored.