"Why would anyone want to be 'sex negative' with children? Tell them it's bad or shameful or wrong? "
Don't build a straw man - I haven't suggested anybody should be sex-negative.
Just factual with small children. This is what it is. Only adults do it.
No need to sell it to them.
You're still creeping me out.
You remind me of my mother, actually. Still completely convinced that she didn't do anything wrong. Couldn't possibly reflect on how her behaviour might affect somebody else.
She has no relationship with me or my children because of this. Same with my Dad.
And obviously, I don't have contact with my brother either.
A family completely ruined.
But hey, it was only a bit of wonderfully positive sex.
So what would I know?