Yes, that is true, the current submissions uploaded to that category will be taken down shortly.
I have been doing Snow Drift recently and it seems like you can get a 2:59 if perfect. However, Akurertaki's 15:30 All Tracks run uses the old snow physics. 2:59 Laps - 1:00.9, 58.9, 1:00.1 The 2:59 requires: 2 reset shortcuts, fast ice slides, and a strategy to save about an extra 2.5 seconds over the entire race. The strategy involves taking the booster ramp into the sky on the second reset, and resetting while still on the booster panel. If performed correctly, you should respawn at the normal 2nd respawn point with the boost still activated. This probably works for the same reason that extended boost works, which involves a delayed boost effect. In my findings, this can save about 0.8 seconds each lap, and with fast driving, can be enough to drive 2:59 The question is, who's gonna get there first?