^ Why should this probably be banned, exactly? Why is it wrong to save two seconds before the level starts, but perfectly legit to cut off entire laps of lap levels, especially when you have to somehow remove game updates to do some of said glitches?
Or, if you're looking for "moving without the timer running" examples (for both 2D and 3D levels, of course), it's legit to take Sonic's route in Launch Base 2 as Knuckles, even though the timer freezes in a spot where it should be moving, and it's also legit to freeze time in Sonic Adventure 2.