I think part of it is because the stakes are lower. In a major hollywood movie if you know that a deepfake is coming ("Here's the scene with Leia!" ... yknow months after Carrie Fisher has died), you're looking out for it and then you're looking for the times it's wrong or unseemly. But when you're watching something on YOuTube and know it's a deepfake, you want to believe the illusion.
I think about the first time I watched the Sopranos "Prosha Livuska" I didn't even think twice about Livia Soprano / Nancy Marchand's bizarre "performance," in the final scene between her and Tony. It was just a scene that I watched, and it didn't strike me as unusual in any way. And then much much later I learned about the full back story about how Nancy Marchand, the actress, died while that season was being filmed and so they had to kill off Livia in the show, and so that final scene was a mix of stitched together footage from other episodes and then a very expensive ($250,000) CGI Livia Soprano... and
now when I rewatch it it's so obvious, the conversation is stilted, the cuts and shots are weird, you never see Tony and Livia in the same shot, and when it's just her in original footage she has like a Mona Lisa smile and it seems odd, like she's not looking at where Tony should be in the scene. ANd yet, the first time watching it, not knowing she died (one of the joys of enjoying a TV show in 1999, 2000... there were internet communities for the Sopranos, but as a casual fan of the show you wouldn't be exposed to it unless you were hunting for it) I didn't think about it at all.
My wife watched the Sopranos all the way through during COVID times, and she knew about Nancy Marchand dying and how there was a "deepfaked" final scene with her, and so even she was looking out for it, and after that episode she was like "ohh yeah that scene was really weird..." But if you weren't looking out for it, and it was 2001 or w/e, you wouldn't have even thought twice about it. Now it's inescapable when something stands out as unnatural because you're looking for it even if you don't know, wheneevr something seems "off" you know CGI and deepfakes exist and so it's obvious to you. I also felt that way about the sets in Lovecraft Country. Watching the show the sets looked otherworldly, like not natural to me, and I thought "oh, right it's probably all CGI, obviously..." and then it was distracting to me for the rest of the show, I kept looking for it.
I'm not saying this is better or worse than Hollywood movies, but I wanted to post it since it always makes me laugh.
Wow the visual transition they do here is seamless, it's amazingly creative. I actually had to run it back and be like "Wtf...... did that change or am I going crazy..."