Mass Effect writer Mac Walters leaves BioWare after nearly two decades

What is impossible? Having talented people with different strengths work together and review/discuss each other's work? You know, like they did with ME1? Which started out as really cheesy when it was still just a rough idea from Hudson but became something so much better. If this is impossible, how do other companies make it happen? Eg the Witcher series.  

ah yes, the ending. It's too bad Bioware didn't use the ending they told the player after the coup. I call it Hackett's ending. He tells Shepard the ones working on the crucible believe it has enough energy to destroy the reapers. That's the ending. After the arms to the Citadel are fully opened, and the crucible is docked, it fires the red beam destroying the reapers. Simple. None of that crap after Shepard passes out.

I have no idea what Mass Effect YouTube says but in my replay of ME3 recently, the Pinocchio retcon of the Geth was extremely vivid. The "indicative of real life" scene about the Reaper code was extremely cringeworthy and lorebreaking.

I hadn't seen this in my original 2012 playthrough because Legion died in the suicide mission in my ME2 game (and I always start a new BW game with an import of my original imperfect run of the previous one).

Tbh, I think that the idea of Geth deciding to inject themselves with "Reaper Code" isn't too dumb or "lore-breaking".

Just think about it: every single being on this planet is running on a sort of a code - a biological one, DNA. We are strongely defined by it and our DNA is also sometimes a limiting factor to what we are able to achieve. Being concious of this fact, some of the brightest minds think about transcending these limitations by various means - from simple eugenics to cyber implants to changing and complete control over our DNA.

Geth surely also would have a base code that might strongely define them and, for example, explain why they weren't expanding past their space - IE their core imperative has maybe been "don't die, become more intelligent" and thus has let them concentrate on building a superstructure combining all their "minds" rather than go and exterminate more potential threats or excert dominance over the galaxy. They might have been rather a "people" of farmers/builders/scolars than warriors and explorers at their core, if we express it in human terms.
And just like humans they might have come to the conclusion that this base code limits them, maybe much more than life forms, which ran through billions of years of evolution, are limited by their DNA, and would consider a way to elevate themselves - or even "free" themselves from the limitations of Quarian foundaton in their programming, especially when after the desctruction of their superstructure they realized that they are still under a real threat of extermination.

Reaper code injection might have been a sort of "cyberpunk moment" for the Geth, born out of desperation. And it opens up an interesting path - of maybe "unexpected consequences" - for the story development, if we assume that Sovereign's talk of "every Reaper a nation" wasn't just boasting: Geth changing from highly collective beings into more individualistic ones. Or maybe a fracturing and consolidation would be happening, leading to an evolution, resulting in there now being a number of varying Geth species: from "Super-Geth", a sort of a super-process dominating, subordinating and absorbing countless others, on par with a Reaper ship in terms of abilities and processing power, to simpler ones, more comparable to a regular human.