Since lemmy instance can be deployed and federated by anyone it’s fair to assume that some bad actors are already doing it. With some scripting or machine learning you could determine user habits and subscribed feeds. Based on other posts the subscription information (activitypub) have also upvotes and downvotes which could be used to gauge one sentiment/political affiliations. I think the only way to circumvent this is to have disposable accounts maybe with some script to to rest scribe to topics of interest every time you have new account. Then don’t use moderator account for anything other than moderating specific sub.

Awesome to see this happening. The link shows 404 page for me. There are similar discussions in https://kbin.social/m/[email protected]/t/10186/What-is-the-Right-Place-for-the-SelfHosted-Community