Mad lad.
It may be "upsetting" to hear on their day out, but who can blame him?
Fact is he wouldn't be in such a huff, if not for the crap he (and everyone else) has had to put up with. For two years.
Nobody's talking back because it's all true, and it makes them uncomfortable.
I'm sure at least one of them present silently thinks the same.
Hurts to know when your own family has taken the vaccines, and the jab.