ZD, you mean to say that you don’t see the difference?! Black straps on shoes was a Minhag while the shoes being made of leather was not. Do you get that difference?
Now, actually when the new look came in many were against changing to fit the outside world. Now that it is normal, no difference how it happened, it is not an issue. I don’t know of any Chassidus which prohibits buttons, btw.