Actually that’s not accurate there is a whole subplot about how her succession will be an issue because of her inability to have children... with Bran it’s like ‘meh’I don't remember the show saying that Dany was unfit to rule because she couldn't have children, or saying that Bran's main qualification was a lack of ability to produce offspring. In fact Sansa brought up his infertility as a problem.
Dany's entire claim to the throne was based on birthright. Her whole character was predicated on her superiority over others. Bran had no claim to the throne. He was merely chosen as a means to keep the peace. Ultimately the show rejected Dany's entire arc as flawed, and for good reason. Tyrion supported Dany's worldview, that you rule by birthright, because you were born powerful (and have dragons), and that the world needed a benevolent power-born person to rule. And Tyrion saw one problem with that, which was what happens when that person dies.
But Tyrion made a mistake, and the show is acknowledging that and rejecting birthright, power, and the desire to rule.
Edit:
That complaint is literally just "the show changed its mind" (which it did) and because it changed its mind in favor of a person with the genitalia I do not prefer, I don't like it. Such crap.
D&D can’t write women, Sansa earlia in this season said she was glad she got raped and abused...