For one, your memory is just all over the place. You wouldn't be able to hold it together long enough to read from a teleprompter.
Think about if you ever had anyone close to you live with the disease. It gets worse day after day, its random when/if they have moments of clarity, they need help doing a lot of stuff (depending on how far advanced it is), and its a lot of repetition, talking in circles.
I am officially on the paid actor bandwagon. Something is just ... off about the whole thing
Leaving aside the non-blinking 'Joe' vid, I was sold on the actor thing when I saw the Biden vid on the dead terrorist thing.
That 'Joe' was moving deliberately -- in control, acting. Sway left. Sway right. Hands brushing the face. Hands nearly making a salute. Sway left. Sway right.
I saw a WH balcony vid -- one camera angle, no wide view, no other actors. Also acting deliberately. Some vids have very little face detail or contrast. Then I tried to study one indoor WH vid where his face had detail, and I noticed the forehead sometimes shimmers.
Good tech. Not perfect but very good. Too fishy.