It's pretty common in every FFXIV storyline for the story to lean towards the whole, "Great Man Theory." It's always revolving around world leaders, heroes, and international/worldwide stakes. 1.0 has us deal with Louisoix who was a member of the Sharlayan forum, in addition to the city state leaders of Eorzea. 2.0 was the city state leaders again, along with an organization that places its right to do stuff above that of nations. 3.0 Ishgard's pope, and the leaders of its knight regiments. 4.0 Lord Hien, Ala Mhigan resistance leaders, Emperor Varis. 5.0 Crystal Exarch, Vauthry, Emperor Solus. 6.0 Satrap Vrtra, The entire Sharlayan Forum, Three members of the Convocation of 14 in Ancient times, an Ex-Convocation member, and an ex-Convocation Select.
It's part and parcel of this game's story to highlight exceptional people and put them in our path/by putting them in our path. Venat is no exception. It is completely in line with how XIV's world has always operated. Oh look, she can perceive Fate! She's so much better than everyone in her entire society that not only did she get to lead it, she got to ignore their customs completely with no repercussions or downsides (because ultimately the Ascians' society was a peaceful one that didn't eat people for their faults, but that's not how Venat's eschewal of their customs is framed).
It's less a story about individualism, and more a story about "The Greats." At every turn the bigotry of low expectations runs rampant with our protagonists (they do not believe in the common man). This was once mildly called out from ARR into HW for Alphinaud's character growth through the Lens of his Crystal Braves Debacle. But never really again since, and it still didn't highlight individuals that were less than nation leaders.
Even our own Ancient backstory for the WoL as Azem placed him as one of the Convocation of 14. We were only ever a person who pulled themselves up by their own merits once in this story, and that was apparently between the events of ARR's start and 3.0's Azys Lla segment (discounting the now literal super saiyan aura Hydaelyn gives us in Praetorium). Since then we have been considered the greatest great of the modern age.
In this way, the story of Endwalker and The Sundering and Venat is just a tale of the Greatest Woman Who Ever Lived, Hallowed be Her name. She altered the entire planet in an irrevocable way creating more moral conundrums than an Imperial Dreadnaught has cannons. Paving the way for someone to finally be greater than her, that someone being the WoL. However, we still have to be reminded at every turn that Venat's legacy is still great and responsible for ours.
It's kind of like Watchmen, but there's no one watching the Watchmen in this setting. Well, other than the audience, and the audience is largely sold on this setting's Ozymandias (Venat).