Oh I’ve long advocated that. Choice should work both ways. A man should have the legal right to sign away all parental rights and be absolved of all parental responsibilities within a certain time period of being informed of the pregnancy. To be pro choice only for women but not for men is sexist.
And if a man is to be expected to support a child, he should have the option of taking full custody of the child.
It used to be (before a 1972 Supreme Court decision) that states could make only married fathers be liable for child support. This acted as an inducement to get married before having children.