Basically, those who still fall for these types of scam aren't those who are contented with their stash(portfolios) in cryptocurrency but those who are greedy IMO. I also received some of these messages but pay deaf ears to them because of their fakeness in nature. They(the scammers) always come out with the same methodology in this regard. Most of these giveaway from the social medias aren't legit giveaway as thousands has been victims of defraud. Elon Musk won't do any giveaway anytime from.now as the world is currently experiencing pandemic.