With Windows 10 support ending in a matter of days, that leaves the latest Microsoft OS as the only real option for gamers right now
Windows 10 support ends in 2025. Linux is a very real option for the majority of games.
Given the idiocy in this article, I wouldn’t be surprised if it didn’t occur to them to delete Windows.old from an external software environment. Ultimately, that’s something you want to keep around for a while because it’s what lets you roll back the upgrade if there turns out to out to be problems.