Here is a bit of information on how Lemmy's "Hot" sorting works.

I'm not going to argue about how addictive any specific feed or sorting method is, but this method is content neutral, does not adjust based on user behavior (besides which communities you subscribe to) and is completely transparent as all post interactions are public. With this type of sorting users can be sure that certain content is not prioritized over others (outside of mod actions which are also public). Having a more neutral straightforward ranking system that isn't based on user behavior reduces addictiveness and is less likely to form echo chambers. This makes it easier to see more diverse content, reduces the spread of misinformation and is much more difficult to manipulate.