I'm the same age as VCM and admire her hugely. I can imagine she and David are amazing parents. I'm not envious of them, no, as personally I would absolutely not want a baby now - but that's possibly because I've had my own 3 DC and am now at a point where I've done the babies, the toddlers and the early school years and am now really enjoying parenting my two teens and a preteen. Which is a hugely privileged position to be in.
But I can absolutely imagine that if you've never had children, or if you were only able to have one child and would have loved more, then the Coren-Mitchell news will inevitably stir up wistful, envious feelings. The urge to have children is so visceral and I think for those who have conceived easily, it's almost impossible to imagine the pain of those who struggle. We had secondary infertility (needed IVF to conceive a second baby) and I can still remember so vividly how awful that was. We also have various friends who have never managed to conceive at all and I'm sure they would have been over the moon with a new baby, whatever their age.
The Coren-Mitchells will no doubt have some amazing times, some gloriously happy times, some incredibly exhausting times and some unbelievably stressful times ahead of them with their young DC, like all families, but they have the financial resources to cushion the difficulties and I am sure they will handle it all with warmth and humour. Congrats to them!