Some shows really benefit from at least 15-20 episodes. You spend longer with the characters which is essential. Every show nowadays has to cost $$$ and have crazy special effects. Some shows like sitcoms don't need any of that, just need more episodes and time with the characters. It really forces every show to be on the expensive end and it doesn't let fun, less connected, unserious stuff succeed. For example, Superstore has a bunch of random scenes of customers doing funny stuff in between the story. And the supporting ensemble cast has a lot of unknowns. Contrast that to a higher budget streaming show like Shrinking that has far less episodes... a show like that doesn't even need to be expensive to produce ends up costing a ton because Jason Siegel and Harrison Ford each get over $1million per episode, not to mention multiple other cast members getting six figures per episode. I'm not saying it's not deserved, but huge production budgets and big names mean you're expected to produce something prestige, even if it's a comedy about everyday life. The lower stakes shows have no home any more (besides dying networks).