why is it hard to believe he got stronger ?

he was on an island with one of the higher ups of the revolution army, he learned new ways to cook to make people stronger and he obv trained and got stronger his self over the 2 years

i hope he learned newkama kempo to its highest degree

nah dont think so cose it also uses hands in some of the moves
Sanji only does footwork

no he does use his hands wen he needs 2 like on that train vs that noodle old lady

i hope he learned to drop that stupid idea of his as well

i didnt see anyone without haki to beat pacifista yet (maybe some logia types ..)

kid+law took one down strawhats combined took one down

px-0 took down px-1

all of them were fruit users. Sanji is just bruce lee without hands

but not logia users

It's not stupid, because he needs his hands to cook, so he really doesn't want them injured.