I was curious so I did a little bit of research(as in duckduckgo was useless so I asked chatgpt). While stomach acid loses its acidity fairly quickly after death how quickly it happens depends on various environmental factors.
Regardless, popcorn kernels apparently pop between 175-200°C(400F). But bodies are cremated between 760-982°C(1400-1800F). So depending on how quickly those temperatures are reached it's probably more likely that any remaining kernels would just burn.
There's a chance though. We need some practical experiments.
No, it wouldn't be the same. Doesn't necessarily mean bad though, the format is still great. You're right though, it would probably be some really young YouTubers so they can appeal to a young audience, as if they only watched people as old as them. I think you need at least one person with a lot of experience in SFX or a similar field
ADAM: I underestimated this. I think we should go 1 pound. 10 pounds? 20??
JAMIE: 20 pounds of kernels is like half a 5 gallon bucket. You wanna fill a body cavity, you're gonna need 70, 80, 90 pounds.