The thing is that it's not even a remake or even a reboot... it's someone taking the name and using it to make an entirely different movie.
Uh, no-did you see a different movie trailer?
Karate Kid basics
Mom & son relocate: original was NY-LA, remake is US to China
Male lead falls for local girl who just happens to have a bruiser of an admirer already
Teacher is: orignal-maintence man, remake-also a maintence man
Learning martial arts- original has household chores mimicking moves(wax on/off), remake shows us one which is clothing inspired (jacket on/off)
No doubt our lead also ends up beating the main antagonist in some public forum for all to see. Proably more directly related themes from the original will be seen once the movie is seen beyond a 2min trailer.
Then there is the whole 'catch fly with chopstick' gag.
This is not an entirely different movie, ok, kung fu vs karate, yes but that trailer shows they are using the same basics of the original.