I'm going to play devil's advocate here.
It's only beta if she's just on her phone all day on social media while the man does all the household chores. But if she's also working a full time job, taking care of the kids, handling the finances and making dinners, I wouldn't call a dude helping out where he can a beta.
Still too close to that domestic(feminine)/outside(masculine) line for me. Other thing is why even bother marrying if you can't do it on one income? A woman working is a woman more likely to cheat.