I’m certain that if someone did collect data from the Fediverse; it would become a hot topic

I’d assume bad actors (or at least chaotic neutral actors) are slurping up the entire fediverse already. It is trivial to do, and nobody would know.

I mean, the whole point is that anyone can spin up a server and federate with others. I could start my own server, which would by default federate with almost all other servers. That means I wouldn’t even need to write a scraper. All that data would be sent straight to my server. All I need is access to my own database at that point. With Lemmy, I’d even get users’ upvote/downvote history, which is not visible in any clients AFAIK. The only barrier would be to subscribe to communities on different servers to kickstart federation.

As long as you don’t run obvious spam/bot accounts, nobody would block your instance.

Alternatively, if you want to write a scraper, that’s also pretty easy. Most servers are publicly accessible. Every community has an RSS feed. You don’t even need an account in general. Again, the whole point is to be open and accessible, in contrast to closed-off data-misers like Facebook, Reddit, and X.

The fediverse is friendly to users, with very little regard for what those users might do. I believe this is the correct philosophy, but I won’t pretend that it doesn’t leave us open to bad behavior.