That's really not possible. These ideas have to come from human minds.
Lol, you're being ridiculous. Or deliberately obtuse just to troll, can't tell which. Obviously, the context of my post was "alien from the perspective of the Milky Way species, which use familiar mass effect technology". Considering that the mass effect tech also came from a human mind, and that it represents a foreign concept to us at first, that's enough to refute your point pretty soundly.
That's quite the leap...
Lol, hardly. Did you even pay attention to the story? I'm thinking not, because you followed that with:
Civilizations rise and fall constantly. Human history is a tale of fallen empires. Reapers didn't bring down those empires. To say "In the absence of Reapers, Andromeda should be unfathomably more advanced than the Milky Way" is pretty silly.
Apples and oranges. It's a matter of scale, which you aren't getting. The Milky Way has 200 to 400 billion star systems. More conservative estimates place that number at 100 billion. It doesn't matter, as that's still a fuckton. The vast majority of those contain planets, and an unknown number contain potentially inhabitable worlds. The numbers don't matter, because in Mass Effect we know that a handful of civilizations reach a spacefaring level of technology approximately every 50,000 or so years, on average.
Think about that for a moment. That means that at any given time, there are dozens of intelligent alien species in the galaxy (considering modern humans have existed for quite a bit longer than that), and at any given time, a subset of those species are sufficiently advanced to use the relay network. Which means that at any given time, there are an even greater number of life bearing worlds that are JUST on the cusp of evolving intelligent life, and at any given time, there are an even greater number of life bearing worlds that have the potential to.
Now consider that the Reapers have been doing this for 2 billion years. Do the math on how many civilizations that is yourself. In Mass Effect, the background lore shows that the galaxy is literally teeming with life. And in the absence of any galactic extinction event, once a species becomes spacefaring it would statistically be extraordinarily difficult to snuff them out.
Now consider that Andromeda has twice the number of stars as the Milky Way.
So, sorry - but no, you're wrong. It would be literally unfathomable, totally and completely unbelievable if Andromeda didn't have some incredibly advanced apex species at some point in its history. It only takes one. And in the Milky Way - that was the Leviathans, two billion years ago. The abundance of intelligent life in Mass Effect pretty much rules out them being a statistical fluke. The only reason another species hasn't followed suit is because of the Reaper's cycles.
And luckily, Bioware seems to have thought of this and concluded the same, with the Remnant having technology that is more advanced and/or different than the Milky Way's. Because it makes perfect sense.
PS: Of note, this is true of real life as well. If humanity stays on Earth, we will eventually go extinct. If we stay in our solar system, we will eventually go extinct. If we spread out across the stars wide and far, the chances of anything happening that would wipe us out become extremely unlikely. You literally can't compare that to two civilizations on Earth taking potshots at each other until one is wiped out. The scale of what we are talking about is, well, astronomical. We wouldn't remain as humans forever, of course, but our descendants would survive as whatever they are. It's why the Fermi Paradox is so convincingly curious. If you run the math, considering exponential population growth and even slow space travel using generation ships, we could spread across the entire Milky Way galaxy in 50 million years, which is a cosmic blink of an eye. That is 0.4% the age of the Milky Way. Even if we say that is an incredibly liberal estimate and it take us ten times as long, that's still only 4% the age of the galaxy. We could visit every single star in that time, by far. Every single one.
If there's one thing Mass Effect did right, it was provide the Reapers as an explanation for the Fermi Paradox.