So moderation is IMPROVED if the articles deleted are just skimmed.

Where do I say this? I can see situations where this will be the case (if the workload is massive), but I am not claiming anything like that.

A more careful or thoughtful reading might raise questions and we certainly don't want that on a site like this. Or do we?

eye rolling

2) The post had +7 karma. Where were the downvotes for this horrible post?

7 Karma is not a lot, so it probably hasn't been a factor in the deletion. In fact, I suspect that the post wouldn't have been deleted if it had a lot of karma (not that I necessarily agree with that).

And why do so many posts with massive downvote levels survive on the site, while this one with positive votes is deleted?

Because posts aren't deleted based on Karma.

Probably not. Just downvoted.

As dowvoted as this criticism of EA with 59 karma on Main, or as downvoted as this thorough criticism of MIRI(http://lesswrong.com/lw/cbs/thoughts_on_the_singularity_institute_si/), which is the most upvoted post on the site ever (249 Karma on Main)?

SO the lesson is you may criticize our ox but only if you are polite and do not gore it? What kind of human bias is that intended to avoid?

Nope, the problem here isn't politeness and I never claimed that.