It's not so much a stereotype as it is a statistical reality. And I never said it was a personal failing, I alluded that the reasons they don't push their kids to swim are complex.

> If your parents didn't grow up swimming, they're less likely to take you.

Furthermore, if your parents can't swim, they may harbor fear of the water or drowning and seek to "protect" their children by actively avoiding pools or swim lessons, and thus the cycle will continue for many generations.