Nobody is upset that there's an official Linux kernel. Of course it takes Linus Torvalds to declare it, and he's understandably not interested in designating an official OS, but this is a consequence.
Because he was literally the creator of the whole thing. And the word "official" means little in the open source community. Yt-dlp took the crown out of youtube-dl hands when it comes to downloading videos. Is yt-dlp official? What official even means?
And that's fine that many devs want things that just work. Little by little, everyone is noticing that windows not only not improving but taking direct action to make the experience worse. The balance is tilting in favor of linux not only because linux is getting better but because windows is also getting worse
Nobody in their right mind would claim that they are building the official Linux OS without turning the whole community against them.
And it's not as if the average user need to use linux. If developers move from windows 10 to linux, the impact would be huge.