The youtube video was showing Elon Musk announcing this "giveaway". It was created using AI, most likely a fragment from one of his presentations and AI generated voice. Whatever you want to call this, the concept of a scam is probably a second oldest after the "oldest profession", but the way scammers use new technology is its "dark" side in my opinion.
Like with drugs, there is supply and demand, no demand - no supply, with scams - there are fools or naive (myself in this case) and crooks.
Just a comment, really not interested in debating this while leaking my wounds.
Based on your explanation, yep, that is most likely it, AI is involved in creating that video. it is not also the first time I've seen videos like that, some were even put as ads on youtube.
sorry that you became a victim of this type of scam but I hope this incident will act as a lesson to be more cautious when it comes to "quick money" schemes that you see online because majority(if not all) are a scam.