Interesting dilemma, do you sell or buy based on logic or fear. If you spend a few minutes looking up choking statistics you can make a strong case you buy these out of fear. See statistically there are much worse causes than hot dogs. Logically you or I can say well if the flat hot dog eliminates this risk than it makes sense. But does it? Maybe it makes more sense to think through the whole problem; is the person seated, did they take a reasonable size bite are there adults near buy who can supervise end or help if something happens?