Yawn, it isn't complicated and it doesn't need that wall of text and the wall of text can't save it.
It's basically obfuscation (by analyzing to death what is said, when what is said, is pretty obvious) of the plot/logical problems, not a solution.
Please elaborate on why his opinion or ideas are illogical.
I personally don't trust or believe anything it said to me. I want to know why people claim what he says is illogical, as well as why is it incompatible with the lore.
To keep it short as opposed to the above mentioned link.
The reapers were created for the purpose of safeguarding organic life against the creation of a supremely powerfull artificial intelligence, which can wipe out all organic life. Yes, it technically says differently, but it cannot fullfill that purpose without fullfilling this one.
The ability to wipe out all organic life, even if just within the milky way galaxy, would make this AI more powerfull than the reapers, by magnitude.
There exists faster than light travel in the mass effect universe and the reapers have existed for around 2 billion years plus.
If the reapers only reap the milkyway, they are an ineffective safeguard against a more powerfull AI hell bent on the destruction of all organic life appearing elsewhere in the universe. Meaning atleast a 2 billion light year radius of the milkyway multiplied by whatever is the maximum speed and range of FTL drive. A super powerfull ai there could arrive any second now and trash the reapers and then the organics.
They are an ineffective safeguard against a more powerfull AI appearing in the milkyway itself. Since they would have to "reap"/check every single star system, planet, rogue planet, moon, asteroid, comet, flake of spacedust, cubic meter of space, where organic life might evolve and create aforementioned AI or is simply hiding from them.
Actually... the only real defence would be to exactly create a godly universe spanning ai, that is friendly.
Not to mention that the whole argument for creating the reapers for this purpose is on relatively spurious grounds. It's based on a few examples of limited conflict between organics and AI's. The Zha'Til, the Geth and EDI. There is no evidence whatsoever of an AI ever having wiped out all organic life (in the milkyway or the universe). Indeed the reapers wouldn't exist, if that were the case. Unless galaxy and/or universe wide extermination of all organic life is just something that happens once in a while and life can simply reappear as the god ai dances into the machine sunset nirvana.
The whole purpose is an excersise in wastefullness and futility, which could have been avoided by thinking in this 1 simple truth into the plot. Space is big.... Really big...
Seriously... All it took was opening an astronomy book after, what was it, 1922-1923, when hubble found out that universe consisted of more than the milkyway.
Even granting that, I still blame ME1 and ME2 for saddling ME3 with an impossible challenge.
Njyah, reaper motivations would have been perfectly explained by "we taste like bacon to them", they be crazy/malfunctioning or that "they need us to procreate". Since the catalyst makes no sense... Crazy is still valid, but it's kinda sought without actual confirmation, unless you count his sisyphus solotion to a non problem.