Sovereign is not the most reliable source. But yes, maybe they built the Citadel, but I doubt that was revolutionary new technology. Architecture doesn't qualify as 'making your own technology'. They obviously can recycle other people's stuff (their zombies, for example) but actually making a big technological breakthrough?
Hence why I also mentioned Leviathan. They are far too arrogant to not take credit where credit for what they did.
Installations that can sent you instantaneously across hundreds or even thousands of light years isn't revolutionary new technology or a big technological breakthrough?
Do you realize they spend thousands of years dormant, thousands of years during which they seem to do pretty much nothing? If they actually made their own technology, 1) we could tell, but we never face any recently developed Reaper tech, 2) they wouldn't need to steal other people's, and 3) they would be virtually undefeatable, and certainly not able to be beat by things as insignificant as the keepers being jammed or the Crucible.
Where is this stated? The only time them taking big naps comes up is when using info from Vigil, who admits he can only hypothesize about the Reapers.
1) The Collectors are recently developed Reaper tech, relatively speaking. The husk versions of our races are newly developed Reaper technology.
2) They don't steal other people's. When have you seen Reaper troops use tech from the cycles?
3) They weren't beat by the Keepers being jammed. They were delayed, which is not the same thing.
Hell, have they even bothered to update their system since they started doing this? The very fact that we can beat them shows they have done jack the last couple of billion years.
Source on them not updating themselves?
They were defeated only because 1)They were given the Idiot Ball by Bioware, and 2) We had a Deus Ex Machina device.
Well, it's called the collector base for a reason. Again, a feat of engineering, but that does not signal a technological breakthrough in and of itself and at any rate it was made by indoctrinated proteans.
Yeah, maybe the Reapers had some creativity and imagination. But my point is that if they really experienced technological progress on a regular basis, they would not steal tech from civilizations just a few thousand years old and they would be way, waaaaaaaaaay stronger.
Indoctrinated Protheans are puppets of the Reapers. By your logic, the Colosseum wasn't built by the Romans since they had slaves and prisoners do it.
Again, we had to have a DEM and they had to have the Idiot Ball for us to win.