Maybe that's the case for people that are lead by their emotions, I think that rather than training to be emotionless, why not embrace those emotions and at the same time and not be a slave to them, you're probably better off that way since that shows class rather than being an edgy teenager trying to bottle it up. That's a really low end if you ask me and it shouldn't be that way, maybe make it 10% if you're not earning 6 digits a month so you can make the most out of your gambling habit, 1% will only matter when the number is in the millions up to billions of income so don't do that to yourself, be generous when it comes to your habit at the least, if you're in control of that anyway, you won't go overboard so gamble away. If you're consistently gambling at 1-5%, it's still probably and addiction although an unsatisfying one especially if you don't make a lot of money.
Getting emotionless isn't the goal, controlling, at least, how it affects our thoughts is the point. We can't go, all, emotionless. It'll affect the brain of the person. Concealing our pains, won't heal the injury. It puts a thorn in the flesh of the player or gambler. Where he may not figure out ways to treat his pains. Dealing with it is better than claiming it never happened or existed. Trying to know ways to handle the emotional problem helps the player to get over it and adapt to the right healing method. However, gamblers must be emotionally intelligent to embrace their emotions. Not everyone is trained to think like you did, on your write-up. Growth is a big factor in behavioral change. They may have been trained to bottle up their emotional problems.
Changing such an adult may not be simple. However, it's helpful you stated this, for players to understand their emotions. A player who neglects his emotions may feel he'd never achieve his goals in gambling and another life target. Consistent emotional tensions can lead to depression. Lossing all the time feels painful and erupts the thoughts of rejection on a gambler. Thereby enlisting the periods of losses on his brain, whenever he's alone, and helpless. In a nutshell, the lost money should be moderated, and the limits shouldn't get bypassed. Thereby, enabling a minimized painful thought on the gambler, he may not have to bother with his lost money anymore. As it's not enormous to get him worried, emotionally.