Not according to this poll I made for the subreddit. And based on most of the posts and comments I've read here, I also sense the majority think it's Adam's, but the Jonah people probably just stand out more, because many might see it as like the more far-fetched scenario.
If you look at the knife again, I think there was a slit on it that shows where the knife would retract into itself when pushed against something. I think they make them with fake blood that would emit from the knife too. Below is kind of how it would work.
https://www.amazon.com/Pieces-Retractable-Disappearing-Plastic-Halloween/dp/B07VK7KGH4
Ha, I went to Amazon Canada first and they only had seasons 1 and 3 for some reason.... (of course they only seem to offer the DVDs, so it probably wouldn't matter to you if they had all of them anyways). It looks like iTunes Canada has season 2 available.
Otherwise, my favorite site to check streaming availability JustWatch seems to have a Canadian version. It's saying only 3 seasons of Superstore are available on Google Play and the Microsoft Store, while iTunes has 4 and Playstation only 2. Not sure why it's so different on different sites, but streaming rights are weird so maybe it's just some strange situation.
Been asking the same thing; Id been using a free VPN (Zenmate) to watch it on NBC, but you only get three episodes and its rather laggy; not to mention the countless ads. Seems to be our best bet; of signing into another account after those 3...