Are most straight men secretly (or openly) aroused by the sight of a huge penis or large ejaculation

[RandyStrotter]

Doesnt change the fact that big dicks draw money in porn. Otherwise they wouldnt be used.

This point was not your initial argument, and not at all what I was responding to. This point is also overly reductive and simplified. Big dicks are simply one factor that contributes to the financial success of porn. And that is highly contingent on the type of porn in question.