I really think that Sanji only came to like women when he was in Baratie, like Patty, Carne and the other chefs teaching him about women, cause when he was still in Germa there aren't really any women around aside from his mom, reiju and epony, i doubt he was able to associate with the female chefs since he does cooking secretly and only the male head chef was there. So him wanting the suke suke as a child can't possibly be because he wants to peak, so as a child he really does want to disapper

The severe macho atmosphere of the Baratie certainly did play a big role in shaping Sanji into the person he is today, but in the Baratie arc I don’t think we’ve seen any fellow chef aboard that was more interested in women than he was. My point is that although the chefs could have influenced Sanji, there could also be some genetic factors that drive his flirty perverted behavior to this day, as much as he would hate to admit it. After all, the Vinsmoke brothers did all turn into heart eyes when they saw Nami, and it’s not a stretch to assume that all four of the quadruplets have the same reaction toward women.

As for your theory about Sanji’s desire to eat the suke suke no mi, I think you’re right. Little Sanji wanted to eat the fruit just for the purpose of escaping his family’s abuse, but as he grew up he started to want the fruit for some other purpose which I really don’t approve of…🤦