I think there are other ways as well to become a whale, such as hitting a big number on primedice which is the topic here, a whale could be made in many shape or form but I agree that it doesn't mean they know what they are doing. Of course there are whales who are really smart and totally deserve to be whale because they literally a self made whale but there could be lucky whales as well where they just happened to hit off big thanks to something, maybe a big dice roll, maybe early investment that they forgot and just remembered, there are many things they could potentially be whales for and that s why I am saying a whale could be anything, they could be smart or they could have no idea, it just depends on how they got to be a whale and not if they are whale or not.
The best way to become whales is winning big money on Primedice, then use most of those won money to invest, in bitcoin, or altcoins,then hold for months to take profits at double price compared to bought price. After taking profits, if winners still have big interest in dicing, they can allocate small amount of total money as budget for dicing on the site. They still enjoy their dice game,have fun time, and also have big money in their pockets. In my opinion, it is difficult to make a fortune from dice.