One specific thought on that:
Folks are worried about whether to federate Threads. I tend to think that’s a red herring. Essentially all the data they can slurp from federation is already public.
I think the bright line to watch is how they prevent federated account migration off of Threads. •That• is where Threads will — must — break the federation social contract.
If we do an end run to make •that• workable…well! But then it’s barely workable now even on friendly instances, so…¯\_(ツ)_/¯