I doubt most Americans would hang around being forced to take ukemi like that. Assuming they weren't put in the hospital on the first go.
Well, I'm Canadian, but I think it looks kind of fun. Makes me think of a couple of acrobatic people at my dojo
I'm assuming it involves being properly and slowly taught how to take the ukemi, and you had a skilled and careful nage, and were always welcome to say 'no thanks I'll sit this one out', and so on.