Sportsbet already took the initiative towards this move. If I'm not mistaken they already started barring people from funding their accounts with credit cards. I think this is a monumental approach and move towards a safer and more responsible gambling within Australia that I believe the rest of the world should emulate. When someone who's not accustomed to gambling responsibly is given such uncontrolled power as a credit card, they go overboard. Overdrafting themselves since they believe they can pay off the debt anyway when they get their big win. But the big win will never come, they'll lose more and more until shit hits the fan and they are left with a negative balance tehy can't pay off due to the staggering amount of it.
Maybe, I can agree with the banning of credit cards in online gambling because of huge losses.
And it is also to safeguard these gamblers, to incur more debts from these credit card companies.
However, from the actual news that the OP posted, they will even ban the use of digital currencies, which for me, should not be the case.
Because if you have your crypto, it means, it is not a debt from those companies, but your money already.
This is not good for crypto users in their country. But in any case, they can spend their crypto in other things, not only in gambling.