using the hide feature also protects you from spam message and spam tips .big players often hid themselves because they are being targeted by beggars . some are just plain stingy and they do not want someone to see them ( i.e thier friends ) because thier friends might beg on them . ive done that too on the past but i realized that it still up to me if i will give some tips or not , its not thier money anyway but im trying to give too sometimes if ever i win huge .
You are correct it is nice for more security. But they should be excluded from promotions.
Honestly there is an etiquette of casinos as well that hidden usernames try to get a pass on and I understand. You guys keep saying that "beggars" ask for money, but normally 5 years ago or even more, when someone won a big bet they shared a bit of it with the chat, as a way of celebration obviously, they didn't need to, they weren't forced to, it was a cultural thing that started in just-dice website first where people who wagered over 100 dollars and won over 100 dollars were giving away pennies, not even a dollar, but it was like a lucky charm to them and it got stuck.
Nowadays everyone expects gamblers to do the same because it is a cultural thing, you don't have to and by all means you shouldn't if you don't want to, but also do know why they would want something like that or at least why they would expect it.
That type of understanding was in the past though, back when stealing from each other wasn't a big deal, back when bitcoin wasn't this expensive, back when scamming wasn't this rampant and the crypto space wasn't looking at each other like the other guy could be a thief.
Right now it is totally different situation, only the super rich could spare to give you money, which there are some out there gambling and I understand it, but they do not have to give anyone anything since the amount is now not just few cents or whatever but more like few dollars at the bare minimum, so there is a huge difference giving away money, when you start you wouldn't know when it hits 50 bucks given away. Also, there has been so many scams on casinos that people do not want to give away money in case they are doing it to some scammer.