Well, my applications still work, my hardware still works, and it does everything I need it to do, so in my case, yes. The beauty of things like this, is that something is only really usable for what you need it for personally (I know someone in person who still daily drives w2k just fine!), so if you need newer hardware or applications for your daily needs, probably not. There are some risks associated with sticking with 7, but I accept those risks and worries, as Windows 10/11 and Linux don't really do all that I need them to, while 7 still works just fine.
I can see myself using it for the foreseeable future, and probably beyond as well. ヽ(・∀・)ノ