She’s no longer “dating down” since he now earns the same as her. And, who knows, may continue on that same upward trend.
I never made more than about 1/3 of what my wife did. However were both well paid
Rocket Man
In the west, “dating down” often means in attractiveness and/or income. The problem with many western women, they’ve been pumped full of “you’re special”, “you can have it all”, and “you deserve it” narrative so much that they consider themselves a “10”, when they’re a “5”. Then think the average guy is beneath them. If they do date an average guy they’ll still call it “dating down” - when really they’re dating at THEIR LEVEL, they’re not dating a “3” or lower.
This is why many young women think “men are trash”, because they’re all going after the top 5% of men (the “666” men - 6’+, 6+ figures, 6 pack abs) - whom can jump to the next girl in line once they’ve had their fun.
Average guys are checking out from dating. This isn’t going to be good for the birth rate.