> Especially in this case: these guys are Hungarians and should really know better.
You seem to define "knowing better" as "agreeing with me". Since these people are Hungarians, I'd guess they know more about Hungarian culture than you do, particularly what symbols are considered offensive in that culture.
If most people wouldn't find the symbolism offensive, in practical terms it isn't a problem. (Of course, anything will be offensive to someone).
And stupid.
Especially in this case: these guys are Hungarians and should really know better.