Bernstein comments that Trump's cabinet is old, other observers have said they're white, mostly, and mostly men (particularly if you omit what I'd call the "semi-cabinet--EPA, SBA,UN ambassador). It's notable there's little attention to their religious or ethnic diversity; the days when we paid attention to those parameters is long gone. And everyone assumes they're all heterosexual.
As an old white heterosexual male I see nothing at all wrong with his selections. :-) By the same token, I understand why others might justifiably criticize the narrowness of his universe.