That’s not planned obsolescence though. Your printer/scanner isn’t made obsolete because you run out of a consumable portion. I mean yes, it’s purposely disabled to force you to buy more ink, but buying ink instantly restores the functionality. It’s super anti-consumer behavior for sure.

If your printer was made to perform worse over time to force you to replace the entire device, that would be planned obsolescence. Like devices with non-replaceable batteries that degrade over time.