“Why don't more people use desktop Linux?”
My perhaps controversial opinion is that the answer matters little, desktop Linux is fine with the current user base and community. Desktop Linux doesn’t need to be the number 1 desktop OS in terms of user numbers for it to be the best OS for its users. Desktop Linux is fine and should continue to cater to Linux users rather than chase a larger user base.
https://www.zdnet.com/article/why-dont-more-people-use-desktop-linux-i-have-a-theory-you-might-not-like/
PS: this applies to Mastodon too.