How are you going to do that? Create a bunch of accounts and spam content? If it's moderated at all you'll be banned before you even start.
Hacking
This is the community for all things hacking and cybersecurity, try keeping it legal. That said I don't take any responsibility for anything that happens/comes from this group but I will try being the best mod that I can to prevent anything from happening.
Lol, antipsychiatry is not to be against mental health services or against psychiatry but it is against how psychiatry works within capitalism, if you would take the time to read any book regarding the subject you would not be spreading FUD just because of what you think of the name (which often times when it comes to philosophy/psychology or other scientific terms the answer is not so obvious).
Besides this, no one is going to do that, and if someone would even manage to do that it would cost a fortune, and anyway Reddit server admins could bring it back in no time if they see it was taken down by force.