Well duh. Hacks on this temporary section are to be checked if they work on accurate emulators, whether they're "old" (2010-ish hack) or not. If they do break then it should be mentioned so someone might be willing to fix it to work on accurate emulators (the "fixme" is still a thing) when the moderation in this section is over.
This hack isn't a very good one. The design is very linear and repetitive. While the beginning is very boring, the second half of the game gets better. Repetitive segments are still a thing though, and overall, it wasn't so memorable. Another flaw were be the blind jumps, without coin paths that atleast assured that there is ground underneath. Overall, could've been better.
Aesthetic-wise, there are a few weird things here and there, like the SMB3 bricks not animating, but it's okay. The redrawn style is kept in almost all levels. Almost because some of the palettes make it look like cartoon-ish.
As only issue worth of mention, music breaks on accurate emulators.