One of my most common attack strings with Zelda is Dash Attack, Fthrow, Uair. After a low percent dash attack, the opponent will almost always block if still grounded, enabling a dash grab. After an Fthrow, most players will jump, to avoid being trapped on the ledge. Naturally, they will not double jump and aerial, because it's not the common habit. Their reflex will be "jump onto stage to avoid falling off the stage". This can be capitalized very easily. Hitting a fair would require intimate ability to predict jump timing, and they won't even be afraid of it, knowing that their jump will easily go over a Fair. However, since they will double jump and try to come back onstage, Uair will connect easily.
The opponent will not anticipate a Uair, because they were not initially above you, and they are going above you to avoid a follow-up and stay on stage. Reading this actually very common jump is typically quite safe, and very rewarding, as the opponent will not have the option to jump to avoid your landing trap.
Most top players refer to hitting the opponent out of their double jump as "the pro read", because it's one of the easiest ways to determine that the attacker understands high level reads, like reading and punishing a jump properly. Most mid-level players will not even acknowledge this double jump as a bad habit, unless it is pointed out to them.