I don't know how many times we have to have this conversation where I always debunk your superhero perception of "modern" athletes.
Human athleticism peaked decades ago. You're confusing athletic ability with creativity, so of course modern dunkers are going to be more impressive when they've had 40 years to build on what came before.
If you don't think Jordan or Vince can't jump over a muppet. Vince's between the legs dunk from the T-Mac bounce alley oop was more impressive. It's a lot more difficult to time your jump to catch a bounce pass than it is to catch it from a set position (even if that position is rotating).
And show me any athlete, modern or vintage, jumping over a 7'3" center?
I don't know why you fetishize modern athletes to this silly level.