In the nicest possible way, your friend is an idiot. You don't move 100% of your investable income into the crypto space - and even if you do, you don't then move 100% of it into the altcoin market, and even if you do... you sure as fuck don't pick a McDonalds coin to go all-in on ahead of a bear market. Sounds like he's learned a very expensive lesson. :o)