Sanji running away is actually showing how deep the character is constructed, how the emotionnal side of him and past trauma is well used to give him more depth, looking like a real life human you can imagine IRL. He wasn't running away from Queen, but from himself (monsterself)... that's just a chapter ago... I can gon on and on on many part of this arc (not even using whole cake) to show how deeply thought the character is compared to other one piece characters