Julian Clary came accross as just as unattractive a character in "home" life as he is in his stage persona. I think he portrays an unpleasant image of gays, and adds to homophobia.

Pryors continuity hypothesis is pretty good, though it has been largely mainstream opinion for about 20 years, and is in fact being questioned a bit by recent DNA evidence.

My own view is that mass migrations occurred- as they have in modern times- but that a fairly small proportion of actual immigrants (and their immediate descendants) had a cultural impact much greater than their numbers- rather like in modern times.