People are entitled to their own views of what is an appropriate use of a flag or of images that reference a flag, and to vary their hiring preferences accordingly. I can see a problem stamping on an actual flag, but not with standing on a flag beach towel (it that is what he was doing). I could understand a militant defender of a flag objecting to its use on beach towels or underwear, but this does not seem to be the objection here. Non-Americans tend to have a more relaxed attitude towards imagery of their flags than many Americans do. We can be just as respectful for flags, but at the same time be happy to accept that the image of a flag doesn't always carry the full symbolic weight of the actual flag. From reading this thread, views amongst Americans vary on the subject.