It showed up on my feed. I see similar advice posts regularly "Just ditch windows and..."
Aside from my work tools not working on Linux natively, there are usually a few other steps involved in making the transition. Most people don't want to fuck around with that sort of thing.
I played around with Ubuntu back in the early 00s, before reverting back to Windows.
I looked into what was the easiest current distro to install in order to revive an old laptop. The consensus seemed to be Mint. It works fine and the old hardware was all recognized and so on. I'm still primarily a Windows user, even with all the the BS that goes along with it.
Using Linux is hardly a project anymore, unless you want it to be one. Plasma is just an interface, you can get many distros with it if you want including Fedora, Debian, OpenSUSE, Kubuntu, Arch, and so on.
You can pretty much just install Mint or Pop OS and go. There are a lot of options (I would argue too many) but you can ignore most of them as a beginning user. No one should recommend arch to a beginner and anyone who does should be shot.