Your husband would be considered a "stag" not a cuckold.
IMO, this is a fantastic position for women since they can have many men with deep masculine desire and yet not have the full aura of being not with a man that would/could be defined as a traditionally "beta", which is a horrible label.
Stag's love to see their partners satisfied. There should be nothing wrong if the husband/stag is fully satisfied with his female partner while she is free to do as she pleases.
Women that cringe at this, usually are surrounded by dealing with men that are not confident and are shallow. Those kind of men bolt, but as always if someone prefers monogamy up and down, game on. But it doesn't make it morally wrong or weak if the marriage has a broader definiton of it.