Well, as someone else said, they could stop doing it (or rather, tell their compatriots to stop doing it) if they think it sullies the country’s reputation. If, on the other hand, they genuinely think it’s OK, then why be all bashful about it?
There’s a difference, surely, between joking about something and being judgemental about it. Possibly Hindus make jokes about British people eating roast beef. Nobody cares enough to find out if they do or not. The French certainly do, same as the British rib them for eating amphibians. Again, nobody really cares.