[RadiozRadioz]

This person is speaking from the employer's perspective, I struggle to see how becoming a parent would change the equation for their side.

They want to hire people who already have some degree of relevant experience. That is a reasonable requirement. If that excludes some parents who don't have time, so be it. Being a parent is one of many lifestyle choices that can limit one's ability to arrive at an interview with sufficient background knowledge. It does not warrant special treatment & exception just because it's parenting.