All the OP's points mentioned are correct, and if all the points are actually done well there is no problem.
I think there is one missing there and that is being a responsible wife/partner. I think it won't matter for the husband if his wife is engaged in gambling as long as the wife still do her part in the family. Even if the wife done all those listed things stated by @OP if she is irresponsible when it comes to her task in the family, the husband will mind his gambling activity.
However, the problem with the points mentioned by the OP is that there are no points of important obligations that the wife must carry out in taking care of the household, husband, children and other important needs. And if these points are implemented along with the OP's points raised then there is absolutely no problem, and will ensure that the wife's important obligations are not compromised, perhaps some are overlooked.
I believe the husband will be ok with the gambling involvement of his wife as long as the obligation of his wife is not compromised due to gambling activities.
And I personally would forbid my wife from gambling, and I have no problem with her gambling responsibly, having fun and so on. And I'm worried that my wife will neglect some of her work or obligations and also be a bad example for the children.
This is confusing, you will forbid your wife from gambling even though you have no problem if she gamble responsibly and I do not think that a gambling wife will be a bad example to the children as long as she do her responsibility and prioritized it over her gambling activity.