Guys, Oblivion is right. I just booted up SMW and was able to replicate both gifs (the original SMW and the Mario Maker SMW).
1) If you hold Y and right, then switch to left just before you jump (never letting Y go), you land way before you jumped off (original SMW gif).
2) If you hold Y and right, jump, then switch to left and let go of Y before you jump, you land pretty much where you jumped off or even a bit to the right, even if you held left the whole time (Mario Maker SMW gif). The first bit (changing directions
after the jump) is exactly what is happening (just look at his hand). Even though we can't see the player's right hand, the second bit (releasing Y) is almost certainly what is happening as welI. I know never letting go of B/Y is ingrained into our DNA, but many people aren't used to holding both buttons at once and will simply release the run button to switch to jump.
I think an apology to Oblivion is due, because, frankly, the attitude displayed towards him has been nothing short of cringe-worthily condescending.
Is this directed at me? I'm not sure what "TC" stands for.
It's "topic creator", so yes, that would be you.