Bonuses and affiliate deductions are exactly the reason why players make an additional account. And account verification can stop multiple accounts from dishonest players, I have never made a second gaming account for myself because there is a risk of losing two at once and the risk will not justify the funds in this case.In addition, the site tracks the player's IP and often those who create a second account simply forget to change the IP, thereby giving themselves away.
Since some bonuses cannot be applied to accounts that have been created already and in use, you most likely cannot get the bonuses on them and so I think it's a reason some gamblers would want a second account on the platform but then some casinos do not permit such and so they actually could try restricting or deleting their other account so they can actually get to start the new account and fund it so they can be able to enjoy such bonuses.