> It has been polished and ready since at least 2019.

Linux has been a fine desktop since almost its beginning.

My first work-issued laptop was in 1994, running Linux. Using a PCMCIA modem to connect to the internet via dialup. Worked perfect. Every year since then (that's 32 years now) I've had Linux desktop(s) and laptop(s) and it all works fine.

If one looks for excuses, excuses can be found, but it has worked fine since the beginning.