No problem.
Problem. I never called US a mainstream news ORGANIZATION. However, I did and do contend that it’s a part of the mainstream media itself. MSM consists of many things: Newspapers, magazines, television, movies, etc. US is clearly a member of that group, and you will never convince me that Jane Soccer Mom or Joe Sixpack, standing in line at the local Wal-Mart where these magazines are positioned, are immune to its message.
Another problem. I’m doing nothing of the sort. My comment about posting the US photos voluntarily came about in the wake of a dustup about my practice of refusing cite demands on subjective (i.e., unprovable) matters. The comment was intended to convey that even when I post cites voluntarily, as opposed to having them demanded of me, the response I described still occurs.
The difference is: I’m right; he’s wrong. 
If he was right, left-wing talk and cable television news programs would have sprouted up 15 years ago rather than right-wing ones. But there was no need because you guys already had ABC, NBC, CBS, The Washington Post, the LA Times, the New York Times, Time magazine, Newsweek magazine, Playboy, Hollywood, etc., etc., etc. You can’t tell me that given the inherent whinginess of the left, that had they not felt the message coming from these sources were pretty much in agreement with their own POV they wouldn’t have been screaming bloody murder, just like they do now about Fox/Limbaugh/Hannity, etc.
As for the rest of your post, and to be honest given some of the buzzwords I saw when skimming it, TLDR I’m afraid. I just got in and I got chit to do.