I'm pretty certain she was suggesting that my point was somehting to do with the gay connotation. That isn't at all what I was meaning. San
Francisco was named after a person:
Francisco was a legitimate name before the city ever existed. Brighton on the other hand, doesn't have the same history and seems like another trendy placename. Therefore the association isn't with the name, it is with the place.
I'm in Scotland where naming your child
Francisco would be perfectly normal. Naming your child Brighton would be decidedly odd. I suppose that is different in the US as Brighton isn't so well-known there but it would still be an association for a lot of people.
Francisco doesn't have as strong connotations with San
Francisco as a gay capital. In fact, the first San
Francisco I think of is a small village in Italy that I visited with my family once - there are hundreds of San Franciscos there. I'm only aware of one Brighton.