But the dynamics aren't the same. There's a huge difference between a minority culture picking up a name used by the dominant group, and a dominant group co-opting a name used by an oft-repressed minority.
The concept of
Cohen is deeply significant to a lot of Jewish people, and I think many would be uncomfortable with members of another ethno-religious group using it. If they're doing it in ignorance it highlights how little they care about others' traditions; and if they're doing it deliberately it's an insult to the importance placed on the
Cohen tradition.
Also, I wouldn't call my son
Cohen any more than I'd call him Priest,
King,
Earl,
Duke, etc. It's presumptuous, claiming an honour that is not his.