Idk what y'all are talking about at this point, moonshine?
If XL and Columbia have come to an agreement to kill WWWY, Hello makes the most sense for the Brits. For all we know an AIA performance there could slay (or suck) and mess up a different third single's timing. Seems to me the reason to do AIA at the Grammys this time and not Hello was because she's already definitely doing Hello there next year when it's likely nominated. They just needed a different song now to distract from WWWY without promoting another future single.