it’s common to see users hide their username, but at times whales like to display their names because I feel they like the attention they get while being at the top (this is my personal interpretation). Also I feel that Rollbit Boas huge lead maybe a reason why @Ayezee has slowed down, but it’s possible there might be other reasons too and for now I don’t see any other contender who can take on Rollbit Boss.
That is more like it. Plus when you are a whale and provide proof that you gamble a lot, and you could corner your nicknames google results for your information and contact, then they will most probably end up getting more offers. Other casinos will contact them and will tell them to sign up with them and that's how it will be better for them.
Better rewards, better returns, better cashbacks etc etc for gambling the way they gamble. Obviously, it is not always like that, sometimes they just gamble for the bragging rights and that is it and they do not plan on anything else, but the real reason for most of them is that they have a lot of money and they like to gamble and they want to get the most out of what they are doing, getting great offers from other casinos to go gamble there would mean their return would be a lot better and they will get more gifts.