Ledger developers are scumbags for constantly reducing memory space and for bunch of other things I wrote before, but you can still use nano s device if you uninstall apps that you don't need.
All coins are still safe, and when you need to send or receive coins again uninstall xtz app (for example) and install eth or any other app.
Solution for this can also be to purchase different hardware wallet like Trezor or Bitbox02 that don't have any limitations for coins supported you and it's open source.