The number of people who are partnered vs single is 70%. If 60% of those met via dating apps, that’s 42% of the total.

You’re still not slicing thin enough.

If 60% of the couples who got together in 2022 met on dating apps, and people who got together in 2022 constitute 5% of all couples, that’s still possible (and probable), then those couples will still only be 3% of the total. Pretty easy to add up to 11% that way when you start including all the 10-year-old relationships, the 20-year-old relationships, etc.

If it were flat at 60% for all years then no, it wouldn’t add up.

But if you look at the area under the curve, it’s still pretty small comparatively speaking because it’s such a recent phenomenon. (And not every year would actually count equally for the whole data set, but it’s displayed in this chart as every year adding up to 100% for its own year.)