Any year now!
I ran Linux on my laptop in college over a decade ago and it worked great.
It just depends on application compatibility and to a smaller extent driver support, though that shouldn’t be a problem for an older laptop.
I've always dual booted windows with some Linux and used it like 90/10.
I haven't even tried windows 11 even though my PC is compatible.
Went full Linux and I'm not sure what I was missing at this point that I needed from Windows.
Ran Pop OS (cosmic) which is the new Wayland based one but unfortunately it's still buggy and then I switched to a gaming focused Linux called Bazzite which has been perfect.
Tiny learning curve because it's an "immutable" OS but have everything I need running on it plus everything gaming related works out of the box.
It was 2019 for me. I haven't daily-driven a Windows or Mac machine in almost 5 years now.
I don't know... Two people around me recently switched to Linux because they could not stand how bad Windows 11 got. I did not encourage either of them (I've got my share of frustrations after running a Linux desktop exclusively for 25 years, and will not consent to be the object of their ire when they inevitably get frustrated - I'd rather help them on neutral ground instead).