Some old devices do cease to work or they start working more slowly. Apple slows down phones with old batteries, for example, even when they are plugged in. Many of todays devices also require online accounts and some completely stop working when those online services aren't available.

I'm kinda dealing with that with a modern company right now. My Ring doorbell doesn't work without Internet access and I can't get it for 7 days or so. I've got a home network setup, but no Internet. The Ring device won't even ring the bell on my house when you push the button, even though it is wired strait in... Now I'm off topic a bit.