Likely a controversial take:
Does this flash flood of new users make Mastodon/Fediverse bigger?
Hell yes!
Does it make content more interesting and varied?
Certainly does.
But does >>a million twitter emigrants make this a /better/ place?
No, unless you like having your door kicked down and a flock of colonisers fill in your living room, telling you how to run your social sphere/instance/federation with long-winded speech codes, omnipresent Content Warnings, and the whole nine yards... π