Most old-time gamblers are good at controlling and faking their emotion I don't think it will be an issue at all it's the newbies that will have a hard time proving if they can take a loss, because while you are learning how to gamble you'll also become good at concealing your real emotion
so it will be no problem for old gamblers.
I agree, the more experience you have with gambling the better you can handle your emotions. I have been gambling for a long time in physical casinos but only with a small bankroll, I got used to having bad beats where the luck just runs against you. It's always great to gamble in a biggger group so you see all kind of reactions.
In the end these kind of protections are mostly for the new gamblers, I think the chances of becoming hooked on gambling is especially high when you are new to all the games.