Chris Gammell said something similar and has announced he's only using Twitter for work now and is auto crossposting there from Mastodon and will not interact on Twitter any more.
I haven't really noticed any difference on my Twitter feed.
I know there are several electroncis people I follow now have Mastodon account, but it doesn't seem permanent.
Any creator ditiching Twitter for Mastodon is crazy IMO, it's shaping up to be an excellent place for creators, with potential monetisation opportunities.
It's not that my twitter feed has changed. It's that the contributors are mostly dual-posting. If twitter survives as a useful place they will still have followers. If the interesting people leave they've already have rebuilt it somewhere without a lock-in.
To be fair, I don't follow celebrities. I think the two biggest accounts I follow there are yours and Naomi's - and she's crossposting. For people that do, it will probably remain fine, but my feeling is that makers aren't strongly represented there. The interesting posts to me are often not the start of a thread but the little people who respond to it. Mastodon is pretty much up to speed in that respect already.
In Dave's position, I'd crosspost and watch both streams to see which worked the best. It covers the options with no loss.
I see no advantage in an eevblog instance, though. Yes, it would be good to have an ee instance but the eevblog forum is a strong brand. Why dilute it ?
Of course, in a sensible world, twitter would federate. Can't see that happening. But the internet has been here before - Usenet was vastly superior to the hotchpotch of gated communities that bulletin board operators used to like, and the big guns that corporate interests prefer. It will swing back to a decentralised system because one size doesn't fit all. I see the next step as small forums federating (remember, it's a protocol, not a monoculture) and the big boys going the way of yahoo, geocities and the rest of the internet detritus. Might take 10 or 20 years, but owners like Musk pulling their weight instead of being a service is the beginning of the end for them.
As for twitter being good for creators .. it might, if it stops being twitter. Long posts are still painful. Video is just a url to something worthwhile posted elsewhere. I could see Musk making it a direct competitor to facebook in order to turn a profit .. and I won't be on either of them, and nor will anyone I follow. I presume you're talking about content creators, not physical creators. The latter aren't usually in it for monetisation, but they are the source of it, just as artists tend to pave the way for urban renewal but move on when commercial gentrification catches up.