Relax folks
I was initially concerned.
But what really is wrong about parents wanting their child to participate in what is obviously a big part of their own lives? If they are just trying for the Guinness record or something then I might hope for some hesitation on their part, but it still wouldn't bother me after I saw all the advice they got from important sources, like their paediatrician and others, ahead of time.
I think their son will grow up loving the same pastimes as his parents, and likely staying close to them and enjoying their companionship.