On the other hand, why not just let women enjoy talking about their children?
My sister is not quite 35 yet, but of course, she loves her boy and is proud of every little stage of his development, as am I (and as is his dad, and both his grannies). Only a really grumpy person would begrudge that feeling.
And why only mothers over 35? Do mothers under 35 never talk lovingly or boastfully about their children?
I think ante natal classes could more usefully concentrate on the idea that electric powered sit-on motorbikes or cars are a waste of money and that a decent bike would be a better investment, and that a good old fashioned book can be as entertaining as a faux computer, if you simply take the few minutes it takes to read to your child and interact with it....