Have not seen Barbie yet, but an Ovarit poster was saying how terrible an actor Hari Nef is. Having seen other TIMs on screen and stage, most are poor actors because they are trying to play two roles simultaneously: their authentic "woman" self and the character they've been cast as. Some actors (of either sex) are capable of doing this convincingly, but it's a challenge. TIMs can't focus and choose between fully realizing the character or maximizing their genderfeels, so both are flattened. 

TIFs are SLIGHTLY better at it, but that's just my experience.