this has always been a thing on Hulu, which is why it is in the new Terms (they merged all their Terms into one). there were a couple shows like this that I watched that had ads run at the beginning and end but never in the middle, even if you were on an ad-free tier (agents of shield was one, IIRC). I don't know why but they definitely ran a trailer that said "due to content-holder restrictions...."
another problem is they bury these things in such a way that it's hard to know when new content has arrived, unless it hits - in the case of netflix - the top 10 or new shows carousel. once it's gone from the most popular lists, forget ever finding it again.
I agree. i do not need 24 episodes of a sitcom wherein the same plot is rehashed 20 different ways. or a procedural where the secondary storyline is dragged out over 15 episodes and gets frustratingly convoluted. Give me 13 original plots and tighter, more believable storytelling and I am much happier.
This is why the "HBO model" always worked vs the network model. Quality vs quantity. I also think often about how the BBC does one series and that's it. Go out on a high note. It's quite American to beat something to death for about 5 seasons past its expiration date and then (lately) try to resurrect it 20 years down the road.