Saying "it's your choice" also does not exclude discussion and support. It allows the person to do what they feel is right for them, rather than feeling that someone else has the right to coerce them into decisions about their own body and health.
It's not "you're a man, you have no say." It's "you can't get pregnant, you can't force me to do anything with my body if I do." There's a difference between those two things.