you have to look at the profits, how much profit someone who invests in genesis mining does in a year vs how much profit you can make if only you buy and hold bitcoin.

for example:

you invested $1000 in bitcoin in the genesis mining and in a year you get $2000.

But another person takes $1000 and buys bitcoin and the price of bitcoin in a year increases 500%. What is more advantageous? buy and hold.