The real reason is that Twin Galaxies were quite old fashioned (maybe still are?). Didn't allow emulators, glitches, various other things. It's partly why most

The real reason is that Twin Galaxies were quite old fashioned (maybe still are?). Didn't allow emulators, glitches, various other things. It's partly why most speedrun leaderboards are kept on speedrun.com now, as the games communities get to dictate the rules, rather than the owners of Twin Galaxies.