Barefoot and Pregnant?

According to this article, the Harper government assumes that the mother will apply for the child tax credit thingy, and if the father does, he will need the mother's permission. The Globe article states that the form reads:

“When both a male and a female parent live in the same home as the child, we presume that the female parent is primarily responsible and should apply, unless a note from the female parent is attached to this application that states that the male parent is primarily responsible for the child.”

While moms may often do most of the child-rearing (statistics seem to point this out) this is by no means a universal state of affairs. Hypothetically speaking, if I get a job as a teacher, I will have a large chunk of the summer off for the forseeable future, if I have kids and my partner continues to hold a job but is not a teacher, she will not. So regardless of the division of labour when both of us would be working, during the summer, March break, and Christmas break (or winter solstice break or whatever), I would likely be the primary caregiver.

But that's just my situation, my point here not whether one parent or the other ought to raise the kids, but rather, that that's a choice for families to make for themselves.

PS: What about a couple of gay men applying for the credit? Is this (no pun intended) a form of backdoor discrimination against gay male parents? Whatever you feel about gay adoption, denying the credit affects the child.