Women gamble less then men, that's a fact, but they also do less combat sports, they don't join the army as often and if they do it's to perform non-combat roles, like radar operators, computer scientists, medics. It's rare for women to do stunts in movies, extreme sports, be race drivers, but also criminals. Most criminals are men, especially when it comes to serious crimes like murder.
It's obvious there will also be less women gamblers, especially in competitive gambling, like poker. Women will rather choose something simple and fun like slots and roulette.
I see nothing bad in it, we are different after all.
Women activeness in some things have been limited in many ways and I don't know if that is because of the home engagement e.g childbearing and up keeps off the home but then it will also be worthy of note if I also appreciate the few of the women who have become actively engage in stuff like gambling and cryptocurrencies.
Just like I stated before, it is very important to check the activeness of the women vs the risk level their willing to take since it all balls down to one thing which is the risk-taking vs responsibility, because of the high demand on men they tend to take more risk than women in many ways and gambling is one of those things that men do more than women due to the risk involved.