I think they gave Alexa too much, too fast. On SmackDown, she was the champion and winning matches, but she was taking shortcuts and surviving through the skin of her teeth like a traditional heel would. She was booked more realistically. Then she goes to RAW and just starts winning matches decisively, becoming this dominant champion when it didn't make any sense. Literally everything she's done since coming to RAW is hold the belt or compete for the belt, and she got exposed as someone that can talk well, but can't actually carry anyone in a feud.
After she loses the belt to Nia, whether it's at WrestleMania or some other show, they need to evaluate her character again.