Losing one function or even several doesn't automatically make something obsolete (outdated, outmoded and generally no longer used) if it's still functional for

Losing one function or even several doesn't automatically make something obsolete (outdated, outmoded and generally no longer used) if it's still functional for it's main purpose. Ball mice are obsolete mainly because no one is making mice that aren't optical/laser (AFAIK). A TV losing a smart function doesn't make that TV obsolete unless the person using the TV was relying heavily on the smart functions. And even then I wouldn't necessarily say that the TV was obsolete mainly because the smart functions on TV are used by a small percentage of consumers, typically less than 15%.