They allowed it in 1999, why the fuck not now?
Easy there big fella...to this day, I associate Bryan with YES! more than I do with his ridiculous pleas to the crowd for "NO!" Who knows what their logic was behind it. But you're pretty furious about an entrance, take a step back from the keyboard, open the front door to the house, and take a walk.
Also, Cesaro is a DLC, so of course they'll have his current music. Unless, of course, by the time they release him as DLC, he has new music.
What? I don't give a FUCK about Bryan's entrance, I'm barely even gonna use him. In fact I barely use entrances period once I've seen them. I care about my guys, Austin, JBL, Punk, Barrett, Sandow, Jericho, Cactus Jack, etc, I'm just stating FACTS.