I haven't noticed any big differences in speed, i use both Mastodon for iOS and Pinafore (https://pinafore.social/ ), a PWA. Just add it to your homescreen and it will behave like a native app (and sometime in 2023 Apple has said they will add push notifications to PWAs).
Again, Expecting non-techies to self-host their own instances after several of them falling over due to light usage and signups is quite wishful thinking and reiterates the need for users to heavily rely on more centralized instances to on board users.
Well all know what happened to mastodon.technology which was run by an individual. It doesn't look smart to sit on an instance that can barely handle hundreds of thousands of users signing up at once and ends up folding up.
> give them time or run your own instance and federate
Yeah, the journalists at journa.host has never been more alive for journalists and is going just great with a much better reach than Twitter [1] /s.
[0] https://ashfurrow.com/blog/mastodon-technology-shutdown/
[1] https://twitter.com/ajaromano/status/1594432548222152705
Mastodon wasn't meant to be a 100% replica of Twitter nor has it ever attempted to be. The only reason it's getting such a rapid influx of users is because of Elon's sabotage.
How fast it is depends on the provider you use.