This sounds insulting but it is intended to be a frank statement.
In 4 years of working cases I would estimate 1 in 6 jurors are above the 85-115 IQ range of average intelligence, and maybe half are at or below the 100 line.
Add in that anyone over the age of 55 is on average far more susceptible to deepfake technology simply because they don't have the life experience and perceptual skills needed to discern the tells in the video, and you have a recipe for disaster.
If you are in court and your opponent might use fabricated video evidence against you, you better hope that your jury is younger or that your lawyers and judges have the expertise needed to expose any deepfake technologies like this for what they are, or you might be cooked.