This shutting down of HCN is finally getting my attention. I try hard to not accept unacceptable behavior and apparently others do too.
Years ago Home Gnome and I discussed how polite commenters were on HCN and we agreed that it was unnecessary and silly. We were obviously wrong. Now the rest of us know why. No one likes being called ugly names nor appreciates ad hommenum attacks. but most people now know what brain research discovered : As Freakonomics researchers Steve Lenvitt and Stephen Dubner report, "negative information weighs more heavily on the brain". Bad is stronger than good." Saying something nasty about or to someone is more effective than not saying it or making a more neutral comment. It works and some of us here do it a lot.
"Flagging"is a way of attempt to alleviate this unpleasantness. Posters making these comments will have to change their behavior or HCN will remain shut down most of the time. It's up to them.