Who the hell said he would care to defend Judge’s honor?
Anyway I’ve tried to explain this using how narrative works.
It’s clear, unless Oda brings Judge himself to Wano, the plot point of Queen being connected to Judge wouldn’t exist unless it is going to lead to something with Sanji. Sanji is the only person on the island who would care about this and so by the very rules of narrative he will be involved.
That’s just drama. The same way it was clear Zoro was fighting Kaido dozens of chapters before we even reached Onigashima, the rules of drama already predicted it would happen.
You have no alternative here than saying Oda is bad writer so maybe he will introduce a plot point that no main character cares about
I say it's bad just because I think it's bad.
He fought Mr2 because he had Usopp glasses and was chasing Vivi.
He fought Satori because Satori appeared there.
He fought Jabura because Zoro was busy with Kaku and no one but Sanji could take on Jabura at the point. Usopp and Nami would just die.
He fought Absalom to save Nami.
He fought Wadatsumi because he made Nami fall.
He never had any "personal history" with his enemies.
Don't see the appeal for the "vinsmoke" tie just to make it more believable for Sanji to fight Queen. Just seems pointless.
But I also said that is as things stand now. I could have a change of heart, depending on Oda develops it.