I think a valid question is why these threads aren't being merged like is common practice and happened to a number Microsoft threads during yesterday's event. I'm not sure Hololens has more in common with a Surface Book than Quicksight and Snowball.
I would have greatly preferred those threads to not be merged.
It's not a particularly good user experience to have a bunch of different unrelated products being discussed under the same article. It's a lot easier for me to just click 'next' and go to page 2 if I'm interested in reading more articles than it is to keep track of what everyone is talking about in a comment section with hundreds of posts and dozens of threads.
People are actually genuinely interested in what comes out of re:invent. Because you don't use Amazon's services or don't like the company doesn't mean they paid for placement. They paid a lot of money to developers to develop great things. Why do you have to take that away from them?