It's not surprising in the slightest that these Arab leakers hate Sanji. A character that refuses to hit women, meanwhile their countries have a non-neglible number of people that support stoning them to death, beating them up regularly, forcing them to cover themselves completely and not leave the home unchaperoned by a male relative, among other practises that the rest of the planet would consider as barbaric and abusive. Of course not all Arabian people are of this mindset, but with the history we've seen of this specific group (this was during the whole yamato gender controversy, in which i personally agree that she's a girl, but they took it to another level in terms bashing lgbt whatever people) they have shown repeatedly that they are very likely the types to support this hardline ideology. Not just this, but there is also the element of cultural hate/envy towards white Europeans: Sanji's character is of course heavily inspired by these aspects. The fact that Zoro is the one who openly antagonises him --as well as the fact that in early seasons Toei made Zoro's skintone more tan, and that the actual mideast/african SH Usopp isn't a badass like they would want to self-insert as -- are all factors that contribute to their Zolo wanking/Sanji hating agenda.