If I have understood my own condition properly one has to be seriously skinny to not kick onesself in the stomach whilst ridin so low in the drops.
I'm starting to be really skinny and I still kick myself in the gut.
(193cm 93kg 84cm stomach girth)
Reason for this, i think, is because the bellyfat you have is more pronounced in a lower riding posture. Even a minor belly sags down when bending over. And so it's in the way of pedalling.

Could be that I'm completely wrong.