Goblinchild I tend to like your answers so I'm going to just explain why I'm so interested in the "hostility" thing about UP.
I've not read any "UP" books, but UP sounds v. much like what my generation might have called "North London Liberal Parenting" back in the day.
My dc were brought up, I guess, in a (mildly) NLLP way, and - here's the thing - attended a school where the school did NLLP, along with most of the parents. It was the norm. Really. The teachers pretty much routinely discussed the wherefores and whyfores of any rules/requests. The school "mission statement" was all about fostering an enquiring attitude towards the world, confidence, autonomy, etc., etc.
As everyone says, these are pretty much common goals.
I don;t think I;d ever have realised how unusual this style of parenting/pedagogy was until I changed the dc's schools, and the circle of parent-acquaintances.
We did move, and into a school/area where the style was much more, what I now recognise as, "traditional". And it was interesting.
Having been considered a fairly "traditional" parent in our previous context, I came slowly to realise that my, previously unremarkable, parenting style, was attracting comment. It was very strange. And rather weirdly, my dd was being judged as (and this is really strange) not "feminine" enough: she was used to bot just following orders (not her fault - her previous school wasn't like the new one).
It all hook down OK in the end - I'm a great believer in being a participant observer in the cultures we embed ourselves in, and that social/behavioural flexibility is a great human skill, and to be nurtured. But it was odd.