I love ballroom, been doing it more or less since high school (10+ years and some breaks), but I wouldn't really use this curve for any other reason than to motivate new men to attend classes.
In the beginning, followers may have a slightly easier time since it's probably a bit easier for a follower to learn from a more advanced leader than the other way around, but this plateaus pretty soon (low single digit months).
Also, leaders tend to pick and followers accept / reject, so in that respect, "attractive followers" will have a bit of an easier time (more offers) than if you're a shy, not very attractive leader.
But that's mostly just for newcomers. Eventually, few dances in, people get familiar with your level and you with theirs in a given group. And I've yet to see a place where one could get no partners, even as a "beginner with only a handful of introductory classes" (unless through some pretty obvious breaches of ethics / personal hygiene).
Eventually (maybe a few months in), both leaders and followers have to do some introspection and practice things like technique, posture and musicality. And there's simply no way other than mindful practice.
Is that ballroom dance with lead/follower? If that's the case, I cannot recommend it enough. It's hard as hell in the first couple of years, but then you'll grasp it. See this graph for the learning curve of ballroom dancing, and don't give up [1].
[1]: https://www.salsafs.com/site/assets/articles/learning_curve....