It must be relevant that when
we replace each letter by its corresponding number in the alphabet (A=1, B=2, etc.),
we find that in each of "MALE AND FEMALE" and "DREADED DREAM",
the phrase splits into two halves each of which has letters summing to the same total.
Explicitly, in "MALE AND FEMALE" we have
13+1+12+5+1+14 = 46 = 4+6+5+13+1+12+5
and in "DREADED DREAM"
4+18+5+1+4+5+4 = 41 = 4+18+5+1+13.
The exact same statement doesn't hold for all the example phrases given, but perhaps something along the same lines does. I tried the possibility of
replacing "two halves" by "$n$ $n$ths for some $n$" (i.e. we might be able to split some of the phrases into three thirds or four quarters all with equal letter-sums).
That didn't work, but maybe something else...