This is literally next level marketing. Their video was a huge success because of the entertainment value Mr. Beast put in it and with that, they are adding more fuel to the fire. Not to mention Mr. Beast is all over the world so having this promotion will really boost both Mr. Beast and Coinbase popularity in different demographics.
Giveaway is somehow only good for some specific places which is sad but good thing for those who do reside into those places but it doesnt matter as long we do get that exposure specially in crypto as a whole
then that do sums up with overall adoption and recognition.