Honestly, I don't find this very creepy. This is information you are already putting out there for everyone to see. If I post a video of myself speaking, I am not concerned about people seeing how my skin vibrates in that video.

As video generation tools become more advanced, we will need better algorithms to validate videos. The bar for "fooling the vast majority of humans" is much, much lower than the bar for "being literally indistinguishable from a real video". The main problem I see is that it's going to be a cat-and-mouse game, and I don't think any method you publish will remain valid for very long in practice. The same method will be used to improve the next version of video generators.

Also, lots of real videos use post-processing that might wash out some of the details they are looking for. Video producers might re-record lines so they don't perfectly match the video to begin with. It's been a long time since I used a Samsung phone, but on my old S6, I remember that it always had a beauty filter applied to the selfie camera that made me me look like a creepy porcelain doll. I could probably make a deepfake of myself that looks more "real" than those real videos and photos.