I mean, my accounts in Twitter or Reddit were never tied to those things, either, and I sure see a lot of Mastodon users under their own names.
What I do know and some people don't fully realize is that public posts here are search engine indexable, as are Masto posts based on their privacy settings, so data being scraped is not conditional on anybody else federating. Although the data that requires federation to access can obviously be accessed just by spinning up an insstance privately at any point.
Don't get me wrong, the treatment of data and the monetization and social engineering tools in commercial social media aren't the same as here, but a lot of people assign a level of privacy and secrecy to their fediverse activity that just isn't there, and the same goes for moderation tools.
Hilariously once they started rolling out Threads opt-ins you could see some Threads users complain that opting in could mean that others can see their posts without their control, or that they don't have direct moderation access to federated copies of their content. And you know what? They're not wrong.
Each platform has its own gaps. I prefer the set of gaps in the Fediverse, and I'll certainly take Bluesky over Threads or Twitter these days. But social media is social media, and there are fundamental issues at the core of the concept and with every implementation of it, including this one.