It is very difficult to communicate with Kovid when you're not a user and you've not previously praised his genius. Any kind of criticism or suggestion that isn't wrapped up in the "but your project is awesome and you're awesome!!!" wrapping-paper is met with hostility, insults and banning.

It is a problem for anyone trying to communicate with him.

Criticism or suggestion seems fine. Insulting is not. The one example I saw were someone was effectively making your claim was someone insulting him and him responding without any hostility, insults, or banning.

citation needed. You can't just make serious claims without any supporting evidence.

I'm not making serious claims, I'm sharing my experience when dealing with Kovid.

If you don't count personal experience as relevant, that's fine, but I really don't feel like digging up a bunch of github links from years ago.

You are attacking the character of someone but can't even be bothered to provide anything to back up your claims? Then why post this in the first place?

Because that's my experience and I'm sharing it with others.

Are you saying I shouldn't voice my opinions, unless they consist of only praise? Nobody asked the original commenter to provide proof of Kovid being "gentle". If you're going down the "only facts" road, then each praise should be followed by "sources" too.