I don't know if the objectively true things listed are well supported or evidence of a cover up.
For the modified shock collar theory, according to the NY post article, he demonstrated it vibrating on stream. If it was a modified shock-only collar it wouldn't be possible to vibrate it.
For Hasan's initial suggestion that she clipped herself it doesn't mean she necessarily did, only that he thought that's what happened. I feel like him changing his statement later to say that he doesn't really know why she acted that way isn't evidence of shocking, rather admitting his initial theory may not be correct.
Yeah, the sticky was on the Hassan subreddit. Of course things likely changed since then.