The tags explains it a lot. I do not agree with the users or developers giving this tag to those "random" games. Most of these are not Hero Shooters in my book.

Every one of those work on Linux, I’m literally in comp queue in Rivals right now.

Me too. I type while waiting for matches. These games were just mentioned as an example what I understand as Hero Shooter. And we don't have many to choose from. I didn't say they don't work, i played each of them for hundreds and thousands of hours.