In this case it's a response to a pretty obnoxious comment. You could argue that the comment op is acting like an apple fan, ms fan or any kind of thing fan that enters a conversation.
It can't be answered in this context, cause there is no context in the post.
I had someone tell me that I was doing exactly that this weekend when I wrote a forum post and feedback submit to the company I buy my keycaps from for a 1.5u Tux or Logo key option rather than the windows 10 logo they currently offer.
I figure they'll offer at least their logo as that'd sell really well (glorious, look em up for why), but having someone reply that I needed to not make Linux my whole life was weird
Not sure it's cope as much as being unable to accept that their attempted put down is having no effect. Bully is in their own head about their inability to get under someone's skin.
It's their insecurities dripping through because they deem themselves power users and learn that they don't actually know shit so they usually very ignorantly and incorrectly put it down. It's a hard pill to swallow when they realize they are just LTT gamer bro Windows users that struggle to use something my grandma runs.
Ultimately, both of those commenters are annoying. Saying "I use Arch btw" is a useless self-serving statement that provides no benefit or information to the audience. But engaging with that message in the manner displayed is also pointless and stupid, even if the statement is correct.
The saving grace for the "Linux user" commenter is that they are self aware about being annoying, judging by their last comment. So hopefully they were just being ironic. Or rage baiting.
Ohhhh I am sooo impressed! Have you also downloaded the classified instruction manual for Linux from Linus Torvald's website, took a correspondence course in machine code, translated the manual, memorized it, and eaten it? Have you Danfg7215? Torvald?