Okay. And I can respect your opinion, in the hopes you can respect mine. Here's my two cents on all those issues:

1. The cliffhanger wasn't good, but to me (personally), I didn't find it that big of a deal. Yes, the blood effect was bad and they could have killed Abraham and ended the episode there. But I feel like, because we didn't know who died, the season 7 premier hit us with its left fist by showing it was Abraham, and THEN hurt us again showing it was also Glenn. If they showed Abraham, we should have had six months to recover and come to terms with it. Again, the cliffhanger wasn't good, but the season 7 premiere did pay off.
2. Sometimes the dialogue can be clunky, but I view the show as more of a philosophical take on the end of the world. "Normal people don't talk like that". I know, and, to me, that's the point. These people are all jaded and forced to think on a deeper level about right and wrong after having been in this for so long. They're not on Day 1 anymore, and they can't act like life will ever be normal again. They have to adapt and think things through differently in order to survive and reason with themselves. It's like in Mad Max Fury Road. All the people in that film speak in metaphors, but only because that's how they process their emotions/what they've been turned into by the world ("I am a road warrior. The one who runs from both the living and the dead.")
3. I liked "Swear". Didn't lOVE it, but it was serviceable. I liked how they did something with Oceanside and I found Cyndie to be a very real, likable character. Not the best, maybe the worst, but not terrible. 6.5/10 from me.
4. I can see where you're coming from with Rosita. But I think she's like a female Abraham; he was a good man, but did put people down and pick fifths when it wasn't appropriate. He was impulsive and filled with a temper that could boil water. And I think part of that rubbed off on Rosita, especially after he broke up with her.
5. I think the themes, while tired, are meant to be repeated. It's like "good vs evil" in Breaking Bad; every episode deals with morality and "who is the evil person". But each episode digs the rabbit hole of "fate vs choice" deeper and deeper until the series ends and you're left to think "what was it all for in the end?" I feel like the Walking Dead takes a similar approach; what is worth living for? What is worth fighting for? Who deserves to live? These are all things you'd struggle with daily not just in a zombie apocalypse, but any traumatic scenario.
6. I agree that the show does sideline good characters, but I also think that them making odd decisions makes them more normal and human. If they didn't do something selfish or weird or stupid, they wouldn't be like you or me, and there would be no real danger. In a crisis, the worst thing you can do is make a wrong move. The problem is, people can be stubborn and think that because they're the ones living their lives, their decisions are the right ones.