Sanji saying that "even if it is the real Jinbe" he'd kill him is such a scumbag statement on Sanji's part. His actions toward Jinbe on FI was his worst moment outside his constant sexual harassment/borderline assault and his attack on Luffy.
To say that about someone who saved his captain's life, was instrumental in saving Sanji at WCI, held off a Yonko so they could escape, and who rushed to Wano to help them is absolutely clown crap. There's no excusecfor it.
I hope that's the wrong translation.