Yeah. I'm no Sanji wanker or Zoro wanker. I like both of them. Personally, I don't try to twist logic in a way that makes them look bad, so I fail to understand why people are so convinced about things like Sanji not blocking it himself.
It is highly likely that he did from my perspective. The odds that the technology is responsible for it would mean from a narrative standpoint that the author himself put Sanji in a position where he was being untruthful. I don't think he would do that to any of his characters... and if not for the boots, if they are responsible, then Sanji supposedly would've melted his foot off.
I doubt that shit... he wasn't lucky that he didn't get his foot melted. It wouldn't have happened even if it was his bare foot.
Truly, I feel if the divisive attitudes keep up throughout the end of the story - many of the memorable points of the story will be glossed over because it'll be popular to mock the characters during those moments rather than appreciate what the author tried to do.