Difference is you can't "hold in" a pre-term birth b/c you're afraid of covid.
Like with coronary and cardiovascular diseases, I imagine long-term impacts won't be known for several years.
And c-sections are definitely subtly encouraged even if there's not a real need.
If you look at the distribution of birth per calendar days there are unusual spikes and distributions on special days such as valentines day and i'm not sure this could explain by people deciding to have specifically more sex 9 month before considering the "supposed" randomness of the day of birth aound the 9 month mark..
http://thedailyviz.com/2016/09/17/how-common-is-your-birthda...