Anytime some proposes a simple solution to a complex problem that nobody's been able to solve and calls it "simple", they're wrong. Who's going to give them money? Bill Gates? No, he's spending it curing malaria. Jeff Bezos? No, he's using his money for his rockets. You? No, you're using your money for whatever luxuries you indulge in. Once you find the people who're going to give away their money, how will you convince them to do so? Threaten violence? No, you'll get arrested. Steal it? No, you'll get arrested. Form a revolution and steal it? No, you don't have enough desperate people willing to give up their lives just so they'll be compelled to give their money to some strangers in another country.

Even if it succeeds, now you have a bunch of unskilled people who don't need to work. What will they do with their time? There's plenty of examples in the US and other countries of how that turns out.