Researchers investigated whether men or women have fewer children. Using international datasets, they demonstrate that imbalances in population structure, particularly an increasing proportion of men, affect male fertility. While men used to have higher fertility than women globally, this has reversed, and women have and will have a higher fertility rate than men. The scientists offer recommendations to counteract the social implications of this trend.
If that is supported by data, that would be the more deserving headline.
I think the headline as-is isn’t the best for sure, but I don’t know that “there are more men in the world than women” is much better, since it’s got such a major asterisk.