It’s not like we have a term like “individual contributor” or anything in the industry.

I’ve worked with several excellent “just leave me alone” sysadmin types.

The problem is that people are being cut for not being perceived as a team player, because they don't exactly fit the narrow perspective avoided by the dominant social culture. That doesn't mean they aren't team players.

For example: someone not always looking into your eyes while talking can be perceived as "rude". Same for wearing noise-canceling headphones in a talk-heavy environment. Oh, you don't drink alcohol during the "optional" Friday-afternoon company mixer? That's just weird. Want to have a day off for Eid rather than Christmas? Wellll, you did ask for it six months in advance and we did approve it already, buuuuut Dave planned a last-minute meeting which conflicts with the mandatory team meeting, so we moved the mandatory team meeting onto your day off... We'll just pay the hours you spent doing first-line support during Christmas in cash, okay?