The best part of the monologue is in-universe, it supposedly takes 3 hours, but everyone on YouTube takes 4-5 hours, which means John Galt was speaking at 1.5x speed.
Honestly Ayn Rand's sexual politics are more interesting than her economic politics. The books are mostly about masculinity and its definition. The ideal men in her books are immutable flawless beings, and the (good) women learn to define themselves by dating progressively better men.
In Atlas Shrugged, Dagny goes from Francisco d'Anconia (no ambition playboy) to Hank Rearden (ambitious steel magnate that's a slave to the state) to John Galt (genius that refuses to compromise on anything). Dagny achieves fulfillment by collecting personality traits from the people she dates—which ultimately leads to her realization she is the one responsible for her own self-actualization (kind of contradictory lol).
The Fountainhead engages with this more, because the conformist Keating is portrayed as more harmful than the physically abusive Roark.
I'm convinced Ayn Rand defined the "sigma male" and she'll get no credit for it as a woman. She engages with the concept much more than the manosphere, because her sigma males end up poor, homeless, and societally unsuccessful because of their inability to compromise.
Contrast the dream sold to young men on social media, which is "not compromising on anything will make you rich and attractive!"
I don't agree with Rand's value system but she accurately describes what happens to people that hate compromise. The only reason why one would be a sigma is if one prioritizes "being right" over every other aspect of one's life.