This is a good option because have to stick to some random alphabets and numbers as a username on a gambling platform or even any other platform can be the first red flag, or should I say turn off to most gamblers.
I believe most gamblers love the feel of personalization, that is, them being able to personalize or customize their profile starting with their usernames.
I won't say it's a red flag. I think a lot of casinos do not even allow users to change their usernames. In most casinos, you have to write your username during the registration period, and later you won't be able to change it. While some other casinos do not require your username during the sign-up process, they later allow users to change their usernames. Spinly allows users to change their usernames.
A username does not really matter. It's just good if a casino allows you to change the username, but if they do not allow you to change it, that should not bother you much. I see some casinos allow players to change their names multiple times.