That might be seen as acting in bad faith. Sure we didn't get or steal the info from them, but we got it from people who did and didn't turn it over to our nominal allies.
Otherwise, ya. Layer that shit like mommas casserole.
Maybe. That's why it's literally the last layer of the onion.
My preferred cover story is basically to say that we came up with much of this independently.
Obfuscate some as coming from xenotech discoveries, but most of it being from a topsecret skunkworks. We just couldn't afford the time or expense to implement all their ideas and innovations, not when the Rachni were literally battering our gates down, and our economy was being strangled by indigenous corruption.
It even makes sense from a military standpoint.
Better a full battle fleet that's using lastgen Citadel tech than a cutting edge fleet that is drastically understrength.
Just read Arthur C. Clarke's
Superiority.
Superiority (short story) - Wikipedia
Short Story - Superiority - by Arthur C. Clarke
And it's not like there isn't precedent; the first jet engines were patented in
1930, and the US ignored Goddard's rocketry work for most of the 30s.
Remember, some of the data we pukled would be doctrine updates. And as we literally just revamped our military to take advantage of our new doctrine, suddenly having the quarians doctrine data is much harder to explain than tech etc.
Doctrine is literally the easiest thing to work up.
We created Beshkarian Doctrine in isolation, using entirely homegrown talent and the fruits of fifteen years of unsupported warfare against the Rachni, and it still took us several years to roll it out into full implementation in the navy.
That we have had the time to work up updates is not exactly incredible.
It's entirely plausible that we have other things we have cooked up in wargames and simulations, but we didn't think were ready for primetime, whether because it was still in testing, or we weren't comfortable with our navy's technical ability to pull it off, or in the training of our spacers. Or their educational level and expertise.
Tech and hardware advancements is harder to explain. It usually is.
But that can be largely accounted for by us being too poor and too desperate to implement some of the theories that our naval RnD came up with. And our industry just not being efficient enough to countenance exploring some of the changes we
Now that we have a full battle fleet worked up, backed up by a raiding fleet, the Quarian 3RWF, and multiple military bases capable of handling ship maintenance while the major ship dockyards are undergoing upgrades? We have some breathing room.
Enough to make it possible to consider implementing wholesale industrial and technological changes that weren't possible before.