I could see staying with Windows 7. That was the best version Microsoft ever made. Microsoft finally figured out how to make it stable, and it didn't have all the ad and cloud crap nailed in. You can run current Firefox, current Thunderbird, and current LibreOffice, which covers the basics. Most Windows software still works.
Groan , the luddite mentality about Windows is and has always been out of control, with so many people insisting on living on decade-old software for silly pedantic reasons like "cloud crap" that can be turned off in 5 seconds. Don't move my cheese, nothing else can possibly be better, Windows peaked 10 years ago. No, my Windows 11 system doesn't use a Microsoft Account. No, I don't get ads on Windows (web search and…
But what could possibly be the point of changing something that works?? Buy a new machine, spend weeks or months reinstalling software, try to find alternatives for things that no longer work, and for what benefit?
Yes one can run `ls ~/ | grep example` in a Windows 7 shell, and ok, it requires additional software, but once that additional software has been installed, it is done. What's the point of installing a new OS so that functionalities that you already have, become "native"? Who cares?
Same for PDF (Sumatra) or SSH (putty), etc. etc. I have a stable system that I know intimately, on old hardware that I also know well. I don't see the need to be running after new things like a dog after a ball.