I mean, it's not your responsibility to change anyone's mind. If you want to put info out there, back it up, etc, there's a good way to do that without going on the attack.
I say to each their own, so long as "their own" does not harm others. If Buddhism works for someone, cool. If going to a psychologist works, also cool. When it comes to mental health, I think we can all agree that a one-size-fits-all solution doesn't exist.