“The term "Any Darn" is not a reference to a specific person. It's a colloquial expression using "darn" as a euphemism for "damn" to express mild annoyance or frustration. "Darn" is a minced oath, a less offensive substitute for stronger expletives. It can be used as an adjective, adverb, or interjection to emphasize something or express displeasure. “?
Well, "Any Frustration" would certainly fit, in a way!
From what I remember, Rand could not emotionally detach herself from her work, so everything I've read felt as a frustrated "fuck you all, I'll get mine." She had a rough upbringing, not gonna fault her for her traumas, but she seemed to thrive on hating everything which wasn't "everyone for themselves," to the point where she'd simply refuse to answer questions challenging that by frequently insulting the person who would ask.
Edit: oh, and if I remember correctly, I think she lived off of food coupons/stamps and state aid for quite some time, while proselytising that they encouraged layabouts...
Edit 2: now that I think about it, Jordan Peterson's overall presentation and composure kinda' reminds me of Rand. Except Rand didn't have a lobster kink, afaik.