This feels like it's conflating a couple of different things.

Firstly, in the Big five model, which you seem to be referencing, openness and neuroticism are separate factors- Low neuroticism isn't correlated with high openness. Yes, since neuroticism is a negative trait, one would expect people low in neuroticism to do better than people who are high in neuroticism. This does not equate to "the most creative people" though.

Secondly, I'd push back that people low in neuroticism would be "least concerned by" surveillance. While strictly technically true, that's not a helpful framing, as it seemingly implies surveillance would have a negligible negative impact for people low in neuroticism. If that's what you're implying, I'd like to see references.

I'm not able to comment at all on the conclusing about "degree of disclosure" being moderated by trust level in social environment, especially how "creative people remain equally creative but do not openly expose their creative output". If true, this implies that trust in society doesn't impact primary (unshared) creative output at all- that's a very strong claim in my opinion. I'd very much like references on this.