People. Stop being dicks. Stop ruining the internet. Go burn the world elsewhere.
I only heard non-specifics through the grapevine at this moment. I've seen tags in the past that were not helpful but were usually benign and ironic and funny. The #no tag comes to mind as one that I particularly enjoyed.
In your case, the community clearly agreed with the community tag you submitted, so I don't think it was a big deal. On a more polarizing topic in the future, I could see this becoming more of an issue, so it's better to nip it in the bud.
There will be a day, one single day, that everyone on the Internet will get along and not be a dickwolf. That day, only one person will log in. Yes, this is sad, but people are people. Tap them on the nose with a rolled up newspaper and move on.
Nah, alt accounts are a thing. That person will just have a very angry conversation with themselves.