@darius I've got a cheap phone (4-5 years old?), Android version 9 (no higher updates available), so I can relate!
Good thing I don't use my phone for internet access often. I mostly use my laptop. But then again, my laptop is now 8 years old!
So many folks use older devices and software. And sometimes it's not even money that's the obstacle to getting an upgrade -- it's the time/energy/brainpower to switch to something new.
Plus, I want to use things longer and produce less waste!