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.
I saw it a few weeks ago and I didn't know who the TIM was going in, as soon as I saw him I knew though. Bad acting, male chin, trying too hard with his voice. That scene with Ken taking off his glasses and "discovering" how beautiful he was, was cringy. We know Ryan is straight and it just looks off...and the TIM looked too satisfied. Validated by a straight guy acting in a movie where he has to call another guy in a dress beautiful. Yuck. They really shoehorned the TIM into that movie and you can tell.
TIMs get chubbies pretending, it must be hard (pun intended?). TIFs are socialized early to a life of performativeness no matter what gender they "choose" and acting is performativeness.