A lot of them are taking a "let's give them a chance" stance which is fucked because we have over a decade of social media history as to why they've already spent that chance and cannot be trusted. There's also the fact of Meta meeting with Mastodon instance admins and having them sign NDAs if they agree to talk.
I won't be on an instance that federates with them, personally.
There is more then a century of proven 'companies lie for profit and will do anything upto and including global genocide to increase their bottom dollar'
Never trust a company when they provide their goals.