That's boring... so once again, I am a literature teacher and no! the ending isn't incoherent. Once again I know other people who work as literature teacher and in art in general and no! they don't think the ending is incoherent. You need to learn what is incoherence, and your literature teacher should learn too.
Then you are a bad literature teacher. I'm sorry, but that's the blunt truth here. If you believe this crap is great or well-done, your students are going to be misguided about the art and skill of elegant writing.
Once again, Bioware did an ending that fits to their own writing. You didn't get it, that's obvious. You can say that you understood the ending but reading like a ten years old child, understanding the general meaning, sorry but that's not reading.
So why do I say that you don't know how to read? Because the writing of the trilogy is based on retroative reading and you separated it from the superficial depth you see. We didn't get nonsense, we got the same writing that was here since the beginning based on paradox, implicit and retroactive reading. You didn't see it during the trilogy, that's your problem. You didn't take seriously what should have been taken seriously in the game, that's your problem. The writing isn't incoherent. You can play how many times you want, if you're a bad reader you will never understand.
I don't read like a 10-year-old child, but it certainly feels like this ending was written by one. And yes the ending includes retroactive reading as well as retroactive damnation and ruination and future condemnation that begs Andromeda to pull something out of its ass to continue this canon.
I partially agree with you on something here. I am happy Bioware decided to stick to what they came up with. This is their version of what Mass Effect should be, not ours and they mostly stopped themselves from making a butterflies and bunnies version that's according to what the fans wanted. I just think they're morons for not ever admitting or conceding that perhaps Mass Effect 3's ending wasn't the most expertly written part of their work. It's always scapegoats and sugarcoating. "Players were grieving because it was so sad Shepard died" or "I can understand it if not everyone liked it, but there's many who DID like it :)"
The DLC doesn't establish the idea of the central conflict, it only create an explicit foreshadowing because people was asking for it. The original game established implicitly the "central conflict" but you need to analyze the writing to understand it.
Now you blame the writing for having developed other themes (that were already there), but you actually didn't see how they are connected. That is bad reading.
See you say "develop" *clap clap* you catch on quick. Yes, you hit the nail on the head again. These themes are established but not developed properly or extensively to become the central conflict at the tail-end. The theme of organics vs synthetics was a big subplot and one that contradicts the logic and plausibility of the Catalyst's claims that "because something happened once it will happen again. Always". his prediction is no better than stories that use themes such as "Destiny" to predict the future.
You should learn how to read before trying to get pretentious like you do. Ignorance doesn't know its limits, you should learn yours. In literature we use words with a specific meaning. Wikipedia, tvtropes etc... won't make you understand them, it will give you the illusion of knowledge. It works on people who are more ignorant, that's all.
Perhaps when you're done waving your arms in the air you can read my arguments and come up with some actual counterpoints.