Earlier quoted context omitted.
Humility and a collaborative attitude are really important to get the best results. When people attack your code, it isn't an attack on you. It makes your code better. It's one of the downsides to releasing any opinionated project (and many good projects are opinionated). For my part, I won't use software written by someone who doesn't either refute criticism or use it to improve code, and I'm not satisfied you're do…
According to logic, this quote "yeah - the C++ bits were clearly written by someone who doesn't know the language well. I'd be careful about using this code in production." is a personal attack. I get offended by this, personally. When I get offended, personally, I answer how ever I see fit. Thank you, you will be missed. I don't know what to do without you.
The snark and sarcasm makes you look incredibly incompetent, and I don't want to touch your code because of it (after all, if you are part of my dependency chain, then you have the ability to sneak in updates, and if you can't even be civil in a comment thread, how do I know you won't attack me through code?).