It depends on his reason for cheating. If it's purely sexual then it's okay because men and women have different needs. If his wife is taking care of the kids, she'll have no time and energy for him when he comes home from work and needs release.
Double standards exist between men and women because both sexes are completely different.
This isn't true...
A good YT channel to watch is FreshandFit where the male hosts (who are visible minorities just like Andrew Tate) discuss with women openly on topics such as this. I mention that they're visible minorities because if the same channel were operated by young white males they would be mis-labeled with the usual slander and probably banned.