I was 39 when my dd was born and 45 when my ds was born (to his birth mother). The article is about someone whose dad was 58 when she was born.
It's all pretty immaterial really because you can't change how old you were when your kids were born.
The best thing is to stay as fit and active as you can, keep your body and mind as mentally with it as possible. (I am horrible dated by the phrase with it).
Part of the article is about ignorance, how it is better for children to know and understand things...
"Growing up I thought my dad was pretty young, he has aged really well and until I was about 12 I believed he was in his early 30s. I felt really shocked when I realised he wasn’t as young as the other dads. For a few months directly after I would cry at night because I thought he was going to die soon."
Had the girl known her father was older but very fit and 'with it' she would probably not have been so worried when she put two and two together. had her dad had a baby 10 years earlier it would not have been 'her'! So it is daft to wish for any other scenario as it is painfully impossible!
My mum was 33 when I was born and at 15 I was jealous because my friend's mum was 35 and mine was 48. Which I now recognise is utterly stupid of me!
In your shoes I would not read these kind or article because it just sets up some sort of age hierarchy. Loads of kids are now raised by 'older' parents, and even by grandparents.
I hardly know anyone who had kids before 30.
It's a storm in a mug of Horlicks!
enjoy your life.