Yes, whether it is a crypto investment or any other investment one shouldn't invest all their money in any single coin or a product instead they should diversify their funds to reduce their future risks. If one or two coins don't perform as per our calculations still we can a decent profit in the long run by diversifying.

If one is offering very huge bonus means they failed to market their product so they are offering huge bonus so that they can just get as much as money from the investors but once these coins come to exchange then its prices will go down a lot due to no buyers. So buy only high demand coins not the other way round.