Well, it's precisely because of the advantages of copyleft for the end user that it's important to keep it, even if the license doesn't prevent digital handcuffs (lock down).
In *my* opinion, it would also be benefical if Linux switches to GNU GPL 3+. However, this is a wild and *personal* guess. I did not study the implications of such switch. There are of course other issues to consider, but since I'm not a lawyer, and not entirely aware of other things to consider it might be a good idea to contact Software Freedom Conservancy and Software Freedom Law Center about this Android case and Fuchsia.
