Oh, significant parts of their culture are abhorrent (e.g. child brides) - and I don't think that "cultural genocide" is a thing (we can and absolutely should kill the harmful parts of some groups' culture).

But the whole gypsy thing was meant to be just an example of how a stereotype, while being grounded in truth, can also be harmful due to the instinctive response that it generates (that's because I believe the solution is to integrate them in the regular societies and thus destroy most of their toxic "cultural heritage"; but the prevailing response in our societies is to avoid them as much as possible, which mostly helps to perpetuate the problem).