It sounds like the OP wants 'monster of the week' stuff

That's mostly Disney content. Most series are 8-10 episodes long still, and there's more series made than there was in the 90s and 00s.

What TV shows do you like, OP?

I would argue this is more damaging than most things for places like Lemmy. The wrong people pick up the communities and just abandon them or completely mismanage them. Can't be helped though.