The only client doing this that I can recall is Primal. It automatically marks notes as trending as soon as they're posted by certain people, with zero interactions and done immediately. It's weird.
Discussion
Gotta help out the frenz
I can understand that at ultra-infancy, base of the adoption curve numbers of users. As Nostr is growing they should probably give up on prioritising specific users and focus on metrics instead. User “relevancy” can still be a metric without being the only metric, although I would say it should be scrapped altogether