It's not, I've been using Linux for 20 years and it's been gradually getting more and more exposure on the main media. I think there was a huge push with Steam Machines and then another one with Proton, then every Windows screw up bumps it a little more. We're probably going to get another bump in popularity in a short while when Windows 11 enables the new feature that will take screenshots of everything you do (credit cards, passwords, etc) and use an AI to search through them.