Bullshit me once, I stop listening. Those aren't follow-up questions, they're coffin nails. Blowing smoke up my ass about "good questions" is one of the most consistent ways that hucksters reveal themselves.
I think there are legitimate avenues for follow up study in Eberstadt's paper. I'm sorry that you disagree, but waiting for every angle and every perspective to be explored before publishing isn't how research is done.