Do you think guys worry too much about their cock size?

My bff is a sex worker in Denver, she told me that she hates big guys because they hurt, and tend to be more aggresive, always telling me that a gal can only stretch so much, and that not being able to feel a smaller guy is a lie, who she says are also generally more gentle and concerned about trying to pleasure her more than themselves. She is an admitted nymphomaniac and decided to become a sex worker to get paid for what she loves the most, sex, and has built up a regular clientele list of guys averaging 4" to 5.5" and not too girthy, she says that the first 3.5" inside a woman is all that counts anyways. She also likens herself as a sort of therapist as she says the majority of her regular clients are extremely shy around women and are afraid of being ridiculed by women for being smaller, so she always tries to reassure them the best she can that they are perfect in their own ways, and that they do feel good inside her and that they don't hurt her like larger guys do.