Unless you are buying a DSP cable, there aren’t microchips or batteries or firmware updates for analog earphones. Kinds with even slight quality to them have detachable, replaceable cables (current IEMs are fine on their second cable) & headsets usually have simple parts a basic soldering iron or similar can fix (my old ones I got repaired in 3 countries in tiny shops by folks that’d never seen them). You gonna repair your earbuds when they break? Last shop I went to, the first question asked if they were wireless & only after confirming they aren’t do they even bother trying to help. You think analog needs worry about a new version of Bluetooth or some security vulnerability in the firmwares communicating to your smarter phone (& also used to fingerprint your physical presence)? I can plug mine in to a port built in ’70s & get a analog signal out.