That is such a cheap argument.
I think the general “problem” is a bit exaggerated in the media - as a frequent visitor of the Berlin Freibäder I have not experienced any problems myself. However, the violence in my small home town city came mostly from German males with German ancestors.
Toxic masculinity (and social injustice) seem to be a major driving the problematic behavior - not immigration. The majority of violence also here in Berlin comes from males. Also, my impression is that is if there is violent behavior coming from males (also in other situations) their background foremost is a rather low social status and not dependent on their passport or their ancestors’ origin. A well educated rich woman is less likely to show violent behavior than the poor uneducated man.
I don’t know the difference of this between the German and the “Arab” (which is the group most people here blame rn) male of equal social status but id be very surprise to see a big difference if any significant at all..