Your argument says "since (unfair child support laws) then (men treated unfairly) thus not(sexist anti-women culture)"
The problem with your argument is that you are not espousing a widely held belief about child support laws being "unfair to men." Thus, a discussion about your argument is likely to devolve into long exchanges about children's rights and anecdotes about ridiculous edge case judgments on both sides.
Which is fine, but I think it would be two steps removed from what you're trying to establish, namely that the unfair sexism is somehow balanced. If you're going to construct an argument of the form A -> B -> C, I suggest you pick an "A" that is beyond dispute so we can focus on the validity of A -> B and B -> C.
The problem with your argument is that you are not espousing a widely held belief about child support laws being "unfair to men." Thus, a discussion about your argument is likely to devolve into long exchanges about children's rights and anecdotes about ridiculous edge case judgments on both sides.
Which is fine, but I think it would be two steps removed from what you're trying to establish, namely that the unfair sexism is somehow balanced. If you're going to construct an argument of the form A -> B -> C, I suggest you pick an "A" that is beyond dispute so we can focus on the validity of A -> B and B -> C.