i’d say it’s less about gaming per se and more that linux is becoming everything the lay-person needs… a lot of people often play games (i’d wager there are more gamers in the world than those that use linux on the desktop, and by a pretty large margin), which previously had all but ruled linux out as a one stop shop

certainly when i played games this was the case - i started by booting linux by default with a windows gaming partition, and tried to hard to make that work but in the end it was just far too much effort and i just started booting windows every time (granted, this was in the windows 7 days ;p)

gaming on linux is more about the average person being able to use linux for all of their tasks than it is about gaming on linux as a specific thing