Because nostr-as-microblogging (which lets be fair, it mostly is now atm at least) doesn't escape the trappings of the clout economy / parasocial relationships etc associated with this sort of follower set up lol. (In fact things like primal's trending bar positively reinforces it.)

Big accounts get read receipts for various reasons. This is actually quite a low follower-to-interaction ratio for this account. Which is fine, who cares. However it gets annoying when primal will promote this as 'trending' despite being of little/no value to someone looking for content .