I'm not trying to start a flame war, here. I was seriously surprised. I get that some people love using Windows.
I had a similar transition. I used DOS through XP/2000 heavily growing up. I worked jobs that used Linux and had a Mac at home until I had a recent job as Win10 was being adopted. I tried to give it my best effort. I got a book on Powershell and read it and researched. I was aghast that the same frustrations I had with XP and earlier hadn't been touched. I wish I had kept a log as I re-discovered them.
* Nobody used PowerShell. I tried to push it, but then I realized I needed a BAT file wrapper to run PS1 files, anyway. I was hoping PowerShell would be a next-gen BASH, but having verbose flags is great in scripts, but horrible interactively. The system I was on was air-gapped and the documentation required an extra download on each system.
* Man, Windows still updates a lot. Often requiring reboots. MacOS asks to reboot like twice a year (and doesn't force it). With Linux it's very, very rarely necessary to reboot.
* I found window management awkward. I was coming from Linux where META+LMB moved Windows, META+MMB resized them. I tried the hot-corners shortcuts and other built-in things, I tried installing a few things.
* When the UI is busy I still can't resize or minimize it?
* Control Panel and other configurations were a huge mishmash of tacked on menus with a mix of old UIs and icons.
* I really missed ssh-ing in to query and poke at stuff. RDP felt so heavy for small stuff that should be quick or automated.
After a few months I toyed with WSL, but spent most of my time sshed into a Linux box using vim or bash when managing files or source code. Most of the small services I set up running in Linux. After a year and a half I left for a variety of reasons.