He has admitted to owning a shock collar

I mean, what he said was that his roommate owned a shock collar, and that he was against them. It was a little unclear to me but it didn't exactly sound like he was admitting much of anything in that clip (if the one you have in mind is also the one I'm thinking of).

Twitter is now saying they figured out what collar he has, and that it's the shock version of it that he took the prongs out of and then put black tape on the back of the box, and that's why he was so incredibly hesitant to show it for more than 0.2 seconds or move his hand away from that weird sort of cardshark grip he had the collar in the entire time. I thought about making a separate post with the quick overview video which is all I've seen so far, but I'm honestly mostly done with dealing with this shit at least for tonight and I don't really want to post it and start another kerfuffle until I can look at the details a decent amount myself. Here's that video though (with some irritatingly quick scrolls through a document which lays out some of the details, you'll have to pause to really be able to see anything, but it does make sense if you pause it and look):

https://files.catbox.moe/x0kbh4.mp4

And yes, I agree. The main thing that makes me think he's a POS is his overall tone and emotional affect, and the dog's reactions to him. If she just yelped on stream right after he reached for something, but then his overall way of interacting with her was normal and caring instead of exactly the opposite of that, then I probably wouldn't think twice about it.