Gender bias has been existing ever since the age of time. It's not only in gambling that there's gender bias and there's women degrading with anything that they're involved with.
It's still there but for some countries and places, there's already the equality for both males and females. That's why those places that have been open with it are no longer experiencing this bias. But the sad truth is that there are still a lot of countries that do think of what you've stated OP.
It can't be gone too quick especially if the people there have been stick to that tradition and belief that females that do gamble shall be avoided and they have a different view on them.
Because in most countries, females are preferred to be stay-at-home moms.
They are expected to do household chores and take care of the kids.
So if they see that the woman is in casinos or any gambling establishments, they are assuming that she can't hold those responsibilities.
But using online casinos, there will be no gender bias here, that's one benefit of online.
They won't ask you if you are female or not, you can play just like others, and no one knows you're playing unless, you will disclose it to your friends or colleagues.
Yes, that's the tradition that will always be there even though in the modern world today, we men are just equal with women these days. Whatever we do, they can do it also.
What you've said is true about not knowing about the gender in online casinos, unless they start asking for information about you and ask for KYC then that will be the time that the casino will start to know the gender of their customer. But, there's no bias on it as they see everyone as customers.
The long-standing tradition that women should stay at home and take care of household chores should be removed. It is indeed difficult to eliminate
this tradition, but slowly now it is starting to fade after women are given the same rights as men. I am one of those people who uphold equality
between men and women, so talking about gambling, which is mostly done by men, but if women want to gamble it should be fine. But sometimes
because of the ancient traditions that still exist today, makes women not as free as men if they want to gamble. If society see a woman gambling,
it will definitely cause a negative stigma, even though that shouldn't have happened. As long as the woman does not harm anyone when gambling,
she has the right to gamble whenever she wants. Now with so many gambling sites making women all over the world happy, they can gamble without
being viewed negatively by society.