Exactly. The show didn't give us what we wanted, which was to see Cersei the villain die a horrible but enjoyable death. It instead gave us a broken woman in the arms of her brother/lover as he comforted her as her entire world literally crashed down upon her. We were denied gratification. That's not bad writing. That's subversive writing.
People complaining about the show going Hollywood make no sense to me. The Hollywood ending is Jon and Dany valiantly fighting and defeating the evil Cersei, but with Jon dying in Dany's arms / Dany pregnant with the child who will go on to bring peace to the 7 kingdoms, ruling wisely.
Instead, we have a character who has always been an egotist, who has always felt entitled to rule, who's always been ready to use violence to accomplish her goals, with a bit of a sadistic streak, who couldn't parse her own hypocrisy in ending slavery but strictly adhering to absolute monarchy predicated on heredity and her monopoly on weapons of mass destruction, isolated and alienated, unloved by the foreign people she's come to 'liberate', having lost her closest friends and two of her 'children', betrayed by one of her advisors, continuously failed by another, and rejected by her lover who also now has a better claim to the one thing that's given her whole life meaning up until that point. She snaps and she just so happens to be riding a dragon when she does it. And it's not just snapping, there's political value to her laying waste to the entire city. She will never be accepted as queen by the people of Westeros, not with Jon's secret out of the bag; she will only ever be accepted as queen through terror.
Emilia Clarke is not my favorite actor on the show, but she killed it this episode. When she makes the choice to raze the city (by the way, the blood-thirsty army unleashing it's rage on the innocents is far more aligned to actual history than the Hollywood version where the good guys restrain themselves out of honor and chivalry), so many competing emotions and thoughts are beautifully playing out on her face. She wrestles with the choice but finally succumbs to her worst impulses and rage, and we don't get the Hollywood war, with clearcut good guys to root for and bad guys to hiss. We got war in all of its horror.
This has all been set-up by the way, since way back when her brother got his crown. This has been the endgame since before the first book was published. Some people just didn't realize it because most (definitely not all) of the time that Dany has used violence it has felt justified and we were rooting for her.