So, let's talk about why a bunch of KF accounts are popping up on Bluesky to begin with. What they're doing is target hunting, and the signal they're looking for is reactions. They're looking for reactions because, spoiler alert, there are not as many of them as they would like you to think. -ACL
"But what if they're stalking my messages." BlueSky is a public protocol. It's always been a public protocol. If anyone cares to, they could run a node and watch all your messages (including deleted ones) *without* ever tipping you off. The incentive behind their behavior is to provoke reactions.