Sure, you might only miss one or two apps. And I might only miss one or two apps. But it's probably different apps for both of us, and I think that probably generally holds true for the vast majority of people.

The Linux Desktop is 95% of the way there, no question about it. But that 5% is different for each individual, and ultimately, it matters.

I mean, we can't kid ourselves here: none of these operating systems are 100% of the way there. By your logic, MacOS isn't 100% of the way there because it can't play the same games as Windows, and Windows isn't 100% of the way there without running Final Cut and Logic. The issue with that metric is that it will grossly play against your favor if we're being diminutive about the amount of software that's on each respective platforms.

It really depends what you do on your computer. I think a better way to look at it is that each of these OSes will do 90% of the things you want them to, and you just need to pick and choose which 10% matters the least to you.