will they accept that proof will they accept that you are putting all your salary for gambling, will this violate the principle of gamble for fun, because you are working to gamble based on your proof income.
What they needed was a prove of income to ascertain that my money for gambling was coming from a legitimate source and not trying to rule my life and telling me what to do with my hard earned money especially when I pay my bills and leave no debts behind.
Definitely yes it will violate the principle of gambling for fun because there is no reason why one should be restricted from gambling when there is no negative report on their mental health or any negative remark or review on them.
Everyone has the right to gambling as long as your country permits it and you're of age.