@draconiam
They put Edi’s name on the memorial wall to signify that she is officially dead… but, with what you’re all saying (and what I’ve though since the original Mass Effect 3) is there is no reason to believe that they are entirely gone. I’ve had this debate since the Bioware Forum days, and I still don’t agree that the conscious intelligence of the the Geth or Edi are gone, just the physicality of them.
The Catalyst even ask Shepard “can you imagine organics living without synthetics, even you are part synthetic”. So, why didn’t Shepard just fall to pieces. What about the L2 and L3 implanted people. I believe that what made the Reapers what they were was more than just code, like they had given the Geth or what was used to uplift Edi. The Reapers were the essence of an entire galaxy’s worth of the cumulative organic physical consciousness, the very thing that made them powerful.
It was this overwhelming consciousness that could worm into peoples heads and indoctrinate them. This was not code. Therefore, there’s a difference between Reaper Tech and being a Reaper. The Geth and Edi weren’t Reapers and, thus, should not have been killed by the Red Wave.
Now, some will say that since Bioware’s developers had said that the endings were literal and what see is what happened, I reserve the right to keep to my own canon, especially when the canon endings were rushed and ridiculous, at least that’s my opinion.