Amy Adams is the type of actress that needs to be yelled at and verbally abused by directors since she's such a boring, uninteresting actress. I don't know what people see in her. She's an only slightly better version of Jennifer Lawrence.
Jennifer Lawrence will always be worthwhile due to her mesmerizing and subtle performance in Winter's Bone. True, it's a shame that she has gotten more and more over the top and predictable ever since, but that doesn't make that performance any less (trivia: three of the top ten performances of the decade were in the Best Actress category that year - Natalie Portman in Black Swan, Michelle Williams in Blue Valentine, and Jennifer Lawrence in Winter's Bone).
Everyone including young girls at that time stanned hard for Gaga. Legend Linklater needed a popstar to reflect pop culture and to fit the story.
The fact that he chose Gaga as the pop culture 'name drop' while paying dust to other popstars shows how above them she is according to people who aren't pop stans (like Linklater)