There's been a lot of criticism of this season that IMO falls flat because it's simply a matter of people not liking the outcomes. They're emotionally invested in Dany and don't want to see her become what she has, and no pivot towards her character becoming mad could satisfy them.
The show has hinted at Dany's mad turn for a long, long time. She could be kind and gracious and different - as long as she got her way. But when she didn't, she acted in ways that was really no different from anyone else. You'd think, for example, a Targaryen who wants to change her brand image might not embrace the spectacle of fiery death to kill many of her enemies when simple beheadings would have worked just fine, but nope! (And to be clear, I'm talking about situations like the Tarlys or Lord Varys, not battles. All's fair there, IMO.)
But there's a lot of legitimate criticism too, that the storylines have felt forced and rushed at times. Relative to the show's pacing in previous seasons, Dany's turn toward madness has come pretty quickly. I guess we're supposed to believe that she is going to just suddenly snap because some of her trusted advisors were killed, after literally years of showing the enormous personal cost she has already paid building toward this moment. As I saw in one headline, it feels like the show is turning her into a crazy ex-girlfriend.
It's not that she's gone mad or that she has killed innocents that bothers me (after all, that's what mad people do), it's that I feel like the setup has been executed poorly and doesn't do justice to her character.