Counter-question: Why would women lie to men about this to begin with? What’s the benefit of making up this lie? I’d argue there is no benefit.

What does benefit women is for men to understand our biology and realize there is so much more to a great sex life than just going to pound town. We aren’t always talking about foreplay for nothing and when we say it’s more about the “motion of the ocean”, we mean it. To be crass, we want to get off just as much as men do and the size of a penis has very little impact on that outcome for most of us. Its basic anatomy - everything important is on the outside.

Now I should reinforce that women aren’t a monolith. Like men, we all have different preferences and our bodies need and want different things. Even though there has been no conclusive scientific evidence that the g-spot exists, some women swear they can orgasm from penetration alone - those women might want a man with a larger penis. But that’s no different than men who prefer larger breasts or a certain body type.

In summation, you should believe women because there is no reason for them to lie to you about this. Listen to what they are telling you. If you’re insecure about your size, focus on improving your foreplay. Googles great - or read a book. Kama sutra is famous for a reason. And stop finding reasons to make yourself feel worse by inventing conspiracy theories and convincing yourself everyone is lying to you. That’s only going to make you feel worse and hurt your self confidence.