I think it’s reasonable to be skeptical of somewhat suspicious deaths, but I do think this one makes sense logically. These types of accidents do happen, and people don’t asphyxiate due to lack of oxygen in the container, but due to lack of oxygen intake ability (bent windpipe, compressed diaphragm, etc). This can especially happen if the person goes unconscious from lack of oxygen or initial impact of falling. There was a case awhile ago that I remember where someone in a school parking lot was trying to put a seat down or up in their car, crawled over the seat and ended up like bent in a way they couldn’t correct, and ended up getting stuck underneath and died due to asphyxia. I’ll link it if I can find it