I'm thinking of the incredibly vital role Rhaenyra was given after her mother died, becoming the first ever female heir to the iron throne.
How revolutionary this was, and what an opportunity it presented for all women in Westeros (outside of Dorne).
How the sexist society she lived in was less than pleased of this title and how happy it would have been to strip her of it. And how easy Rhaenyra made it for them to do so.
She knew the importance of the title she bore, she knew that every noble man in the continent would look for anything to discredit her because of mysogyny, she knew that how she behaved would determine whether or not women would ever be considered capable of taking the weight of the crown and rule.
And she completely fumbled the bag by:
Being extremely rude and bratty to all of her suitors, refusing her arranged marriage, obviously cheating of her husband and claiming her bastards were true born, murdering said husband so she could marry her uncle (who has a terrible reputation) days after his own wife's death.
What was she thinking?
Didn't she even bother to wonder what the realm would think of her unlawful actions?
She literally proved the sexist society right, by being the most scandalous princess she could be, and that only solidified in the minds of everyone in Westeros that if you put a woman in a position of power she's gonna abuse it to do whatever she wants.
The girlboss black queen is the reason why no other Targaryen woman ever sat the iron throne after her, as her scandals and treachery turned the population against the mere though of a female ruler, in fear of having a new "Maegor with teats".