Choose Wisely: The Search for the Truth Continues, now with Andromeda context.Kett + Remnant = Reape

Good observation, but you are digging the wrong way. This story, though seeming to be progressive and linear, is very tricky because it is being told from a specific perspective using memories and data Shepard and the Ryder's understand from their time; coupled with some weird twists that make it both fun and absurd in the process - like finding Kett crates on Hab 7 containing human, asari, quarrian items. And not all of this story is in order. We went to the core to meet kettified angara in ME2, but the story of the Collectors was muddy in comparison to how it presents in Andromeda; though the intentions and genetic research of the Kett/Harbinger are nearly identical. The deeper dive into the angara gives us perspective we lacked in the OT and definitely adds to the context and helps make more sense of what the Intelligence may have been trying to do. Maybe SAM is doing it's job?

In order to discover the past we usually have to dig backwards and then do our best, despite missing key pieces of data, to construct the path forward that produces a reasonably sensible narrative. The Fact or Fiction quest on Voeld; listed to Ari Vesjek's comments at the end. His point is valid.

So, the linear part; in ME3 we detonated a dark energy weapon - a year after the Ai was on it's way to Andromeda. 600+ years later, in a galaxy far far away we see the aftermath of a dark energy weapon that was detonated some 400+ years before we arrived. It's not a coincidence but it's also not progressive in relation to time. We are supposed to be 2.5 million light years away - it's a little too hard to believe that the crucible would affect this time; getting here 400 years before us and not affecting either the nexus or Hyperion as it passed us in dark space some 500 years back?

A dark energy weapon was indeed released, but not by us. We just got to relive the events in which it was created and used (Perhaps why in ME3 it seemed to come from nowhere and took 6 weeks to build; lol). It's also unlikely there was a ghostly arrogant child at the end of that journey, given it was the Leviathan the created it. A failed attempt at stopping their own quarrian war.  Ironically this lead to the creation of an organic species that consumed other organics as part of their reproduction process... which eventually gives way to the birth of the reapers. It a calamity of cluster fucks perpetrated by the arrogance of the apex race.

Vigil: You must break a cycle that has continued for millions of years. But to stop it you must understand or you will make the same mistakes we did.

ME:OT, ME:A... is a looking glass into the past; the cumulative sum of all the games books and comics is ME:Origins - just read between the lines.

It would be nice if Shepard or Ryder could have said: "Just get to the point." but that would have been much less of a wild ride. It may not have been necessary for us to have a cypher for language, but thought processes are much different. It's difficult to tell a story about chess to someone who only understands checkers. We still need more (better?) perspective, or understanding before we'll comprehend the whole picture. It's not that we are idiots (despite what Sovereign says), it's just a communications gap between us and the AI or Leviathan - whomever is narrating.