I don't know about Dave, but I do have a kid (4-year-old boy) and my reaction was similar to his.
Long lines at a free event? A pain, yes, but a surprise, no.
The balloon hat thing? Upsetting, yes. Silly, yes. Also not a surprise in the current world of overofficious security people.
The attempt to make it appear to be all about Bills management? Utterly unsurprising, but without more context unproven.