Yes, of course I have!
I must have worded my post badly. I was thinking specifically of covid, not just that babies in utero can be affected by viruses their mothers contract.
Covid is known to be neurotoxic in some cases. It is possible that this effect also affects babies in utero and brain development in children who catch it themselves.
There is some evidence to support that, but it needs more research, as even the mere idea that covid could have lasting effects on the brains of children is a disturbing one.
So I mention it as a possible factor, following posts that are pointing out that any effects of different social exposure related to lockdown are not relevant to those born subsequently. Lockdown impact is limited to those who were around at the time. Effects of covid itself won't be.