Re: At its foundation, it will be forked from LineageOS
My ex-Android phone runs Lineage and uses F-droid as its main repository, with occasional forays to Amazon's app store for IPlayer Radio, etc. DuckDuckGo, Firefox, Chromium, OpenStreetMap, CSipSimple, FreeOIP and an SSH provide the most used functionality. I do not have a Google account.
The problem for general acceptance is the pressure from government, banks and large corporations to use their closed-source (and hence of dubious trustworthiness) software that is only available via Google or Apple. I do not understand why these organisations cannot make thir stuff available from their own sites, or sign it themselves and make it available from other repositories. Perhaps they are concerned to maintain their deniability shields when their clients money or data goes walkabout. They do this by promoting inherently insecure protocols and then placing the onus for security on the end-user.
Nothing will change until most legislators are more familiar with STEM subjects than politics and self-promotion.