The netflix shows suffered heavily from episode bloat.
Most of them were 13 episodes long and they didnt have enough content to fill out all of that. All of them, with maybe the exception of Daredevil, had so much fucking padding you could literally watch it with a phone on your hand and not miss much.
I first noticed this when watching the first season of Jessica Jones and realizing how fucking boring it was. Luke Cage S1 also had its share of problems with the main (and best) villain die by episode 7 and then having to rush along a new even badder villain before it ended.
I pretty much gave up on Netflix MCU by the time Defenders came around, but from what I heard the quality didnt improve one bit... with, again, maybe the exception of Daredevil S3, which I hear is pretty good.