They need to do that if they want to be known as the competition now is tight. There are so many popular and big crypto casinos around. For those who are looking to maximize their deposits or casino experience then indeed that they need to avail this or avail any events and promotions that they can see not only on this casino but also on others too.

I think that their bonus here is only available for the first deposit, that is to prevent users from abusing it, as you see the bonus seems promising already. I wouldn't be surprised if KYC is also one of the requirement to avail such bonus for the same reason I said earlier. I think some will comply as they understood it.