Yes, Eagle’s bird commands aren’t regular special moves/command normals as they aren’t working with their rules. Unlike Kilgore’s teleport or Kan-Ra sandsplosion, they can’t be reversals. It’s pretty clear that they didn’t wanted to give Eagle, a heavy setup-good offensive character, a reversal. Eagle SHOULD always block meaties, and when a blockstring ends, try to trade a c.KKK, so the bird’s divebomb gets him free from pressure.
It’s an intended weakness, which also works in his favor: since he can call the bird assist while doing any animation, he can perform a vast array of powerful tactics, which includes but not limits:
-Making most of his approaches safe, including his slide
-From the previous point, get a mixup
-■■■■■ shadow counters
The current properties of the bird’s commands makes him extremely powerful during offense, but weak during defense. This is intended, and anyone who wants to play Eagle should do peaces with this concept. @MBABanemobius worded it better
Sonic is right. Once you manage to press the input while your character can be controlled (not in hitstun, blockstun, knocked…), it will come out