I'm not overheated, to me, it is just discussion. I'm not getting nasty or calling anyone names. Not angry with anyone either.
Notice his reaction to your benign and reasonable comment. Anything threatening to his belief and he reverts to accusations and calling you a shitcoiner.
Coinjoins are great, I use them when I use bitcoin. If bitcoin increases to be on par or better in privacy to monero, with no serious tradeoffs, I wont need Monero anymore. Until then...