I'll only speak on NCT because that's the only group I feel confident enough to talk about in this situation:
NCTzens don't collectively stay on top of every unit, there are fans of different sub-units, and usually those fans spend mostly on their respective units (NCTzens here are more invested in all of the units than a lot of other NCTzens which i guess can throw people off.). Because of the different sound each sub-unit puts out, they pretty much have a different following and along with that- the separate units actually don't come back as much as you would expect them to... NCT Dream comes back once a year with a comeback and then a repackage roughly two months later and then goes back to whatever they're doing, and recently NCT 127's been doing the same. WayV hasn't come back since early 2021. so i guess you could say its not for hype, otherwise SM would focus on each unit more.
if i don't make any sense don't drag me through the dirt. be nice, this is my first actual effort in trying to reply to an anon thread..