Linux is still rougher and costs more time. Windows is going downhill though so maybe that's how it balances out. Regarding the flatpak/system/etc complaints, the windows equivalent is the Windows Store vs regular installer version. Imagine somebody questioning that division and branded as an idiot because they didn't RTFM or divine the wisdom of MS or something.
I do know that as a person who got dragged into computer support, mainly because I used and worked with MacOS, and our support army was all Windows centric, your comment about costing more time got a chuckle. Our Linux people used no support, We had a hundred or so Macs, and if I had one support call a week, it was a busy week.
On the Windows end, however, we had more computers, of course - several hundred. We had a departmental group of around 25 people with a group leader and a supervisor, and a department head to keep them running. And I even got sucked into Windows support, especially for the C-Suite. And my burn rate was significant.
I'm not going to change your mind of course, I'm just speaking from my own experience. I've been dipping in and out of Linux for 20 years, more "out" than "in", until now. Back then, dipping in, audio didn't work well, network was a huge fuss, USB was a fuss, KDevelop was miles from Visual Studio, gfx drivers were a gamble on a good day and the list goes on. Now it's miles ahead. I'm still hoping to get a DAW/VSTs working without spending weekends though...
You aren't wrong. When I first tried Linux, it was still on mini floppies. It was a fuss, and not worth the effort. After Unix based MacOS came out, and I had to use Terminal daily, Linux clicked. Especially after my Linux mentor noted "Think of MacOS as the slickest, shiniest version of Linux". Because in the meantime, Linux had been improving. Suddenly everything fit. So now, my main emphasis is on usability, security, and the software I need. So I have that Windows laptop for the one Windows only program, my Mac for most things, and some Linux machines that I have fun with.
Irony possibly, but the Windows laptop is still most of the problems.