I was directly targeted by the post of Blax. But nothing in my belief system was hurt. Is it antagonizing? Ofc. And he should be ready for the heat if downplay the beliefs of other, that's fair game. But is it outside of ethical limits? No. (or I missed something).
This would be outside of ethical limits:
"Islam is a religion of hate" > This would touch to something more than just religious belief and dehumanizes believers.
"You are stupid for not believing" > This would be out lines
My relationship with One Piece is far stronger than the relationship some religious people have with their own beliefs system, it educated me for decades, transformed me, and still inspires me. I feel the destruction of my "sensibility" everyday on this forum. Do I wish for these behaviors to be less hurtfull, yeah.. But do I want for it to be moderated and other people banned for that? No.
"Sensibility" is a fancy word to maintain religious institutions unchecked. Sensibility is meaningless. What counts is the contextual material elements and conditions of a critic. Does the critic creates a danger for someone? Does the critics participate in a racist or discriminatory rethoric? If that's the case then yeah, moderate the critics, if not, there is no reason to do that.