[TeMPOraL]

The positive claim being that coarse language hurts children, yes. This is the positive asserion that needs proof.

[jacalata]

Nobody has made that claim in this thread. The positive claim we are discussing is still Vonneguts quote.

[littlestymaar]

Well, the thread started with :

> but, I don't think this is really what people want their kids reading […]

This is actually the initial claim, and the Vonneguts quote was a response to this claim.

Parents used not to care about what their children hear or read, until society told them it's bad parenting.