What scraping can get is very little public information.
There's a lot of information that servers keep contained such as IP addresses of where you are when you made a post. Other info such as your email address remains contained within your own instance. Meta cannot get at that information. No other Fediverse server can get at that.
This blog from Gargoron (Eugen Rochko) who essentially created ActivityPub that underpin all these Fediverse systems including Mastodon, Calckey, Pixelfed, kbin, Lemmy etc.