I don't feel the current 3:38 WR by Katz should be considered valid as a speedrun attempt for the sole reason that it uses glitches that are not present in SMM.

As stated in the video description: "You have to download a modded level, for example from Psycrow."

The glitch involves using a hacked level that was created with outside tools and memory modding to glitch the game into not saving level clears and therefore reducing loading times. However, not everyone has access to said modded levels and therefore this is not exactly fair.

Because this is not something native to Super Mario Maker and instead uses mods (even if the run without the hack itself still could have beaten the previous one) it should be disqualified.