And anyway, "daddy issues" can be defined in more than one way.
First, we have the woman whose daddy was absent and she didn't get much, if any, attention from him. As a result, she spends her life looking for a "father figure" who will treat her the way she thinks a daddy should treat their daughter in regards to attention (obviously not sex, because that would be a bit oedipus).
Second, we have that same women mentioned above who, as a result of the absent father, spends her life getting into relationships that have the same male-absence quality. Sometimes it is sub-conscious, sometimes she is very conscious of it.
And frankly, it's only a cop-out when the woman understands why she behaves the way she does and continues to do so. For the woman who doesn't understand that she behaves in that manner because of the absence of her father, it's not a cop out, but something that needs to be pointed out to her so she can make steps to change her behavior.