If you haven't seen the Extended Cut, it shows you that the galaxy was eventually rebuilt. Life did continue afterwards. They aren't going to Andromeda to escape the ending. It was addressed in the Extended Cut.
In my second paragraph you quoted, I didn't say anyone was wrong. Read it again. I said what you might think is something big (10 km crater size), may only be a small problem (size of a quarter). In other words, people who are emotional tend to think things are worse than they really are.
I have seen the Extended Cut. Frankly, it's insulting. It doesn't address the very unpleasant implications of the endings, and instead tells the audience "it's all good"
"Sure, you genocided an entire from of life, but everyone's glad you did."
"Congrats on enslaving the galaxy, but don't worry, everyone's happy with Big Brother Cthulhu lurking in the background of their lives."
"Don't sweat forcing gene therapy on everyone, they're glad for it. It's not like they have a choice about it""
But hey, be get a slide of Zaed chilling on a lawn chair, so that makes up for all of it, right? 
And of course, if you don't care for these options, you get to make an awesome "I fight for freedom, mine and everyone's" You get a huge middle finger from Bioware for daring to speak out.
So yeah, don't tell me EC "fixed" anything. Except provide modders with more material to work with.
As for your other point, the reverse can also be true. What you see as a small problem is in fact a major issue for a lot of other people. So don't try to trivialize the concerns of others. It makes you sound condescending.