In terms of the current wave of people deserting X for #BlueSky I think that extolling the virtues of decentralisation and the fediverse to the masses was never going to be a sane strategy. It's too complex ...
If we just said "Get an account on mastodon.social" It's be a lot easier to get people bought in. For those that might get it, follow that with "other options are available" and see if they care when they react ...