No, that isn't true. Without wide adoption you may not have any
impetus for btrfs to get better. However, it getting better is
dependent upon wider development, maintenance, and testing. I'm not
sure we are in a position to actually do that, and that is the bulk of
my hesitation. Throwing something upon Fedora users as a default with
the hopes that it will improve is pretty horrible in my opinion,
particularly if we aren't able to actually fix things they find.