I think the reason BigBassie30 didn't submit it because it's not kind of his favorite and not special to be proud of. There are still tons of his run on his channel which are faster than on the current leaderboard but not submitted (like Mountain Temple, Syracuse, Canyon of Death, I Shall Return, Spartacus etc)

I have tested, this also works on AoE2 (Dark Age) doesn't work with AoE3 and AoE2 HD. To sum it up, this glitch will send every players to the lowest age of the game and lost every upgrade. If you have a building of the higher age, you can train the unit which is available in the age you have that building (e.g: stable - scout, academy - hoplite).

Edit: This works with every building except for wall.

Well... And this also works on Definitive Edition