They don't clip from different videos, they take all of the videos they upload and brake each word down to the soundwave. So you will need a lot more videos to make it more believable. That all takes extra time. When they have enough they can type in what they want it to say and how they want him to say it, it takes time for the ai to do its thing. Then you get the audio
Fuck no its not hard to use voices. https://youtu.be/oCh27k5nCyI
Learn about tech before you talk shit. All you need is a few hours of him talking and you can make him say anything you want. Guess what, he was one of the most recorded men in human history
Sorry, was just reading https://thedonald.win/p/11R4STJ1GL/truckers-unite-/c/ and was suspecting that there would be some others posting bullshit here.
They took an oath to defend "our greatest ally"