Intersectionality would come into play if he was arguing that he was a member of multiple minority groups. Here he was arguing that he was a contributor (not necessarily a member!) of a single group, distinct from the previously discussed ones. It's entirely possible he's a member of multiple groups, my point was just that his argument didn't reference that and it was therefore illogical.
I'm... actually not clear on what you're saying. Are you being sarcastic or serious? I can't read your tone and I could imagine realistic scenarios where you're saying one thing or the other.
My bad - I was being sarcastic about the first comment, not sarcastic about the second (and agreeing with you).
To more fully explain what I meant by my first response, I was frustrated by his lack of awareness of the ways intersectionality impacts how different people interact with each other online. Codes of Conduct become increasingly important as one recognizes that intersectionalities of oppression can create extremely toxic situations for some minority groups and not others, depending on the context of the group. So, basically what you were saying in your second comment.
You sound pretty knowledgable about intersectionality. Do you have any material on it? I'm only familiar with it from one blog post, so I wouldn't mind learning some more. It sounds like there are more nuances to it than I first understood.