I wonder how many of them are older people who were turned off by [1] or children of older people who warned them about it.

https://en.wikipedia.org/wiki/Tuskegee_Syphilis_Study

This one [0] says

White adults:70% Black adults:65%

Democrats: 86% Republicans:54%

[0] https://journalistsresource.org/health/vaccine-hesitancy-res...

The discrepancy is likely due to to the vaccine not being approved for children yet; the 40% figure is misleading

Black people and conservative Republicans both have (bad) idiosyncratic reasons for rejecting the vaccines. I don’t think this data contradicts the parents point about the partisan nature of vaccine rejection.