completely different technology included here.
As far as i remember they told the first step was to implement the coins which were supported by their chrome applications (since chrome is shutting down all chrome applications + google is gathering massive amounts of user data).
Ledger told they are going to increase the number of supported coins gradually. In the end we will (hopefully) be able to access all coins storable on the nano s via ledger live.
But coins which were accessable via chrome applications needed to be implemented first -> then bug fixes -> UI/UX improvements -> adding erc20 -> adding more coins is the plan according to ledger.