That depends on your definition of "usable".
Windows 10 is no longer receiving "feature" updates -- last year's 22H2 is the end of the line. So no more changes to the UI, no new capabilities, etc.
Windows 10 will get security updates until its End-of-Life in Octber 2025, at which point it will become wildly insecure to use on the internet. This is because starting with the next Windows 11 security update after Win10 EOL, the Bad Guys will know exactly how to hack your Windows 10 computer because it doesn't have the latest fixes, which will only be available for Win11.
All that aside, just as there are many folks still using Windows 7 and older releases, Windows 10 will remain "usable" until the application software vendors start making their latest versions incompatible with it.
Ah ok, I thought they were still updating- I don’t have windows 10 so I haven’t followed it.
((many folks still using Windows 7))
Me included- offline though-
I use my 10-year-old Windows 10 laptop to surf the Internet and stream all of my TV watching. It’s just easier with my hearing to have high fidelity earbuds and watch it on the laptop. So not too concerned about security on that machine anyway.
Not that I’m surprised but I can’t say I like the notion of Microsoft telling me what I can and can’t put on my computer. Assholes
My Surface Pro 5 claims it can’t be upgraded yet the control panel has a version number for 11.
It’s all I have after the fire and blast if I can figure out out what to download in case it goes sideways.
:(