Maybe he’s a throwback to Old Hollywood…. back then the Studio gave you your name, your backstory, and your romantic partner. Even in the modern era, television reporters change their names to fit the genre. Lastly, his opinion on her performance is absolutely accurate if that is how he feels. There have been plenty of child actors who have been on the scene for SO LONG that they’ve had all youthfulness zapped out of them. They DON’T give immature performances (though their childhoods often suffer for it.) Maybe that’s what he was comparing Wallis to.