Per the ISU's technical instructions, the toeloop can be downgraded if the toe has turned to face forward before takeoff.
The skating foot, not the picking foot.
EVERYONE rotates at least a 1/4 turn on the Toeloop before the picking foot leaves the ice and going up to a 1/2 turn is
extremely common (some go more than that, which should be accounted for when determining how much leeway they get on the landing - Kimmie Meissner's toeloops are a perfect example).
About the prerotation - it is an impressive amount of prerotation for both Lysacek and Weir. I looked at other skaters and Lambiel, especially later in his career, also had a lot of prerotation. Joubert seems to be pretty good though, he cheats perhaps 1/4 of a turn. Yagudin and Plushenko had really amazing Quads.
Yagudin indeed had an excellent Quad.
And guess what:
His toepick leaves the ice a half rotation into the jump.
It is not a "cheat". This is how jumps work.
No Quad is 4 rotations
in the air. No Triple (excluding a well done 3Axel) is 3 rotations
in the air either. Certainly not the Toeloop, Salchow, or Loop to be sure. On the Flip and Lutz, some skaters have a technique which can force 3 full rotations in the air because of not rotating their toepick on the ice before jumping, and almost all of them ended up having trouble with that jump:
Kurt Browning's toepick would leave the ice with no prerotation at all on his Lutz (or even be
outside of where the start point jump for the jump should be). The result? It was his most inconsistent jump (he stopped even attempting it in 1994) and often didn't rotate 3 full turns anyway. Look at how short he is on the landing of the Lutz in his 1993 World Championship Long Program as an example of what can happen. In terms of total rotation
in the air when compared to other skaters, that jump was perfectly fine. But, because the foot leaves the ice so soon, he ends up landing what would considered to be 1/3-1/2 of a rotation short (and subsequently needs to put his second foot down onto the ice to stabilize himself). The toepick on his Flip behaved in the same manner and that jump wasn't his most steady either.
Tara Lipinski is the only person I've seen who has been able to consistently pull off 3 rotations in the air. It was with the Flip. Her picking foot on that jump would be totally backwards (in relation to the camera being at her back side) when she left the ice and she would land completely backwards too. Brian Joubert comes closest to that on his Flip and Lutz.
You don't
want 3 full rotations. You want the foot to be on the ice a bit short of being completely backwards so that you have a smooth exit.