That account still has to be linked to a real person, and not doxing yourself circles back to using social media responsibly. Social media is just that, Social media. You cant swim in the pool and not get wet. The ways in which your describing it being abused are ways in which every facet of every social media can be abused. So if one is so concerned about it, why even bother using social media.
This wouldnt be as much of as issue if Lemmy had better support for connecting with other instances and their communities.