Maybe LibreOffice and GIMP are enough for you. They are not for me, especially in professional contexts where 90% similarity isn't the same as actually compatible, especially when I collaborate with other users and designers. And I actually appreciate the Creative Cloud subscription pricing, which is great for occasional users like me who can sub for a while and then cancel without having to spend thousands of dollars at a time. Software have network effects too, and I don't produce documents and graphics for my own gratification, but to satisfy team and client needs, and telling them "Oh, but it looks fine in LibreOffice, you need to use a real document standard and not some proprietary format" is not really an option. Maybe if you're Stallman and get to dictate the terms. I'm not. I need software that works with what other people use, and software that I can use to get jobs with employers that pay me in dollars and not ideals.
Maybe you don't care about anything but 1080p 16:9 displays. That's fine, but there are others who do. Whether for spreadsheets or vectors or photos, sometimes more pixels are better, and definitely having plug and play support for things like monitor brightness are nice too. It's fine if you don't care about any of that. You don't get to tell me what I care about. Shrug.
As for poor buying skills, eh, I'm perfectly happy running Linux on my phone and servers, Windows on my desktop, macOS on my laptop, and iOS on the iPad. And guess what, I don't even know or care what architecture my microwave runs on. I just don't feel the need to install Linux on everything. Each device has their specialty, whether that's cooking food or playing games or mobile apps or web dev or GIS.
I'm glad you like your Linux UI. I tried Ubuntu on a Yoga 2 a few years ago but didn't like it. To each their own, eh?
