In what context would it make sense to make an argument that ran counter to statistics bearing on the subject when the statistics themselves appear uncontroversial?

It seems like an empty criticism to point out that someone's cited statistics agree with their argument.

Instead, either find a problem with the argument or find a problem with the statistics.

Furthermore, I made no claim that people ought to get vasectomies.

My intention was to counterbalance anecdotal fear mongering about a procedure that is well known to be safe and effective as form of birth control.