For anyone else wondering, here's the text of the actual email cited as the CoC violation:
Michal, if you think crashing processes is an acceptable alternative to error handling you have no business writing kernel code.
You have been stridently arguing for one bad idea after another, and it's an insult to those of us who do give a shit about writing reliable software.
You're arguing against basic precepts of kernel programming.
Get your head examined. And get the fuck out of here with this shit.
Tortoise git is probably what convinced me to just use the CLI for everything back in the day. Tortoise SVN is basically 1:1 with the SVN CLI (as far as I could tell, at least); Tortoise Git was...not.
Maybe other git UIs are better. I hope so! Maybe even Tortoise has gotten better. But it was not good back then. (This was around 2013.)