Lots of amazing artists, creators and researchers are obviously highly neurotic.
I was also once an art student myself. Creativity extends far beyond individual contributions, which becomes evident in resource and personnel management. Creativity is highly correlated to openness, as is intelligence, and is least restricted by those who are most eager to exercise decisions and try new things without fear of consequence, whether real or perceived.
I never claimed otherwise. You have invented your own strawman to attack.
To restate your argument: openness is correlated to creativity (not controversial) and being neurotic dampens that because you care a lot what people think (no evidence).
There is no correlation between neuroticism and creativity. Neuroticism doesn't effect openness so it makes no sense. Either your argument is that neuroticism influences openness and that influences creativity or your argument is I just think neuroticism makes you less creative because I just think so. You might as well not even mention the Big 5 because it doesn't effect your last point.
https://historycollection.com/16-examples-of-the-madness-of-... https://www.science.org/content/article/origin-darwins-anxie...
Can't vouch for the accuracy of these descriptions but they don't suggest lack of neuroticism however brought on. Bodily dysfunction of whatever kind can be causative of course.