Also, part of this is just Youtube Google.
Youtube's algorithms work like plumbing plumbobs:
It is very likely that unless you click both the subscribe AND the notification bell AND let it notify you for everything, Youtube will simply forget that you have subscribed to a channel for weeks at a time, robbing the channel owner of tons of viewers.
Too short videos = Cannot monetize. So no pay. That's why instruction videos that would take 3 minutes takes 18, because they have to talk nonsense for 15 minutes just to ensure they get money from you watching.
Same with clickbaity images and titles, something that has gotten way worse. Compare say Deli's thumbnails from 5 years ago. It's not only a matter of professionalism, but a clickbaity image helps in the Battle Against The Algorithm (tm).
On the other hand longer videos is a gamble, because if you talk too much nonsense so people skip in the video? No monetization from that viewer. Adblocker? No monetization. And so on.
...Which is why Twitch and Patreon are godsend for Youtubers these days.
