I found that YT Shorts became absolutely terrible around the time they removed the dislike button. This could be because the recommendation algorithm is lacking adequate signals now, or they could be intentionally pushing profitable bad content and removing any signal of possible backlash.
Short form video inherently has fundamental differences to what it will support and optimize towards. Just the selection effect of who prefers to watch shorts over long form content produces a different optimum that IMO is far worse.
Take a population, and then remove anyone who is willing to invest more than 60 seconds on a idea, and then sample the "preferences" of that population.
What did you expect to end up with?
Creators who I really like still end up producing trash on shorts because that's what gets traction, because the problem is what is actually liked by someone who wants to just mindlessly scroll 30 seconds at a time is really bad