From the membership page. This explains what speech is "free" on this forum and what isn't. You "nail in the coffin" accusation seems unfounded. I don't see it as part of a larger trend. I also suppose that there are lots of places on the Internet to go and be rude and unkind. You certainly have the option of starting your own forum or Facebook page for that purpose.

Be aware that our forum is Free.

Anonymity and Guest Posting are permitted.

You are free to be anything you want EXCEPT unkind, impolite, argumentative, snooty, or either FOR or AGAINST that of-what-we-do-not-speak.