I know what you mean by going right over our heads.
But I get it and it feels incomplete, should I get some actual closure, I'll be satisfied. Plus, even if it does make sense, it's not what I paid for, it's not what I was promised and a lot of people feel the same way. I personally paid to receive 10 (or was it 16) different endings that were impacted by my decisions over all the games.
I didn't get what I was promised for my money and I have a right to complain.