Wheres the part that says the dangerous throw/lifting rule doesn't apply?
How can you lift someone who is already in the air? Anyway:
Section 15 Notes
Dangerous throw (d) If, in any tackle of, or contact with, an opponent that player is so lifted that he is placed in a position where it is likely that the first part of his body to make contact with the ground will be his head or neck (“the dangerous position”), then that tackle or contact will be deemed to be a dangerous throw unless, with the exercise of reasonable care, the dangerous position could not have been avoided
Exercising reasonable care does not mean waving an attacker through for a try just because they jump. Therefore, if an attacker jumps into them, the dangerous position is hard to avoid.