No i wouldn't even try to advice any friend of mine to secure loans in order to invest in crypto currency market based on speculations. This is so because, the crypto currency market is very volatile and loaning money to invest in it is going to be a bad move and not a wise decision considering the fact that if the crypto prices drop down due to world economic conditions and other factors and he/she loses the money, how would the loan be paid back.
However I'd totally support any friend of mine who decides to still go on with the loan and investment after carefully considering the odds and possible outcome because if we must succeed in life, we must learn to take risks.