You are not your code, but putting my code up to be torn apart in a PR definitely feels like being vulnerable to me. It's a good thing for it to be torn apart and scrutinized, so as to make the product better, which is what we're all after, but it still touches a nerve when the reviewer is an ass about it.
Yup. Absolutely zero percent chance a Jr dev's expressed vulnerability that day was "when I see sr dev is sitting at his desk muttering "stupid fucking idiots" and reviewing PRs, I get scared and anxious".