(about diverse female character designs in the anime OP):
They want to sell merch. People prefer buying merch of attractive female character

Second muscles on men are considered attractive because muscles are masculine.

Is it big boobs? Because in most anime/manga women are skinny and have body type. Yet I only hear people complaining about one piece lol

It is not sexist lol Look how female influencer look like. That's what most people find physically attractive.
Vast majority of people don't fine masculine buff women or fat women attractive.

sexualized female character design don't look good to me because it's my preference but those design are profitable? Because many find it attractive

Women looking attractive is important because most people don't want to buy merch of ugly women.

There are people who think that non skinny women look good but they're minority. There are people who prefer hook nose but most people don't find hook nose attractive. Understanding this point is extremely easy

What make diverse female body type good thing lol I went touch Steven Universe

Why do you even think that it is sexist lol I can't see it literally. Oda probably does care about making attractive character because people like attractive character. Dude people who want ugly female character are in minority