Monster Girl Quest - Part 3

You seem to be missing the point of what he's saying.
It would simply be a quicker alternate for those who either don't know how to merge the games or are simply too lazy to download all the games and merge them.
Not every one is smart enough to realize there's instructions, surprisingly.

I will disagree, based on the fact I'd have preferred ME3 to end with text description of what came after compared to having zero closure whatsoever. It actually has nothing to do with making sure every possible permeation of dialogue through the three games, so much as it is providing a little blasted closure, not to mention a decent finale, a grand battle, compared to the horde mode swarm that marked the last real part of the game before the quick-time-event walk began. See, I'm one of those crazy people who has lost all interest in Mass Effect as a series because of the last ten minutes of ME3. I can't even enjoy the first two games anymore. ME3's ending isn't simply bad, it's an example of the writers/director/whoever just giving up and throwing up random trash because they backed themselves into a corner and didn't want to delay the game to make a real conclusion. You can justify it all you want with any myriad of excuses of why it happened, but it doesn't change the reality of the situation, and the reality is that MGQ's ending was written by someone who not only cared about the finish, also wanted to provide absolute closure, going to the effort of the game going on nearly an additional half-hour if you follow absolutely everything.

tldr version: MGQ's writing still has a heart and soul put into it, and ME3 is soulless.