I think you've kinda misread what I put in the first paragraph and it's affected how you've digested in the rest of my post.
I agree that Daenerys has left leaning politics, what with her liberation of the slave cities, but she's learnt over the course of six seasons that she can't beat the system via liberal means, and the people around her aren't afraid to tell her that. She's ultimately had to win by fire and blood, and she's developed a taste for it. This was great when she was burning fascists, killing slave owners and stamping out right-wing rebel militia groups (which is essentially what the Sons of the Harpy were). We could gladly cheer her on as she went about those plans because she knows how to sack cities and remove their hideous leaders.
The problem for her is that she can't quite sustain peace once she's settled in as the ruling party. She liberates Astapor and Yunkai in season three but immediately leaves them behind. By season four they've both returned to slavery and by season six the masters of both cities have exploited the power vacuum, taken back control and attacked Meereen. Her entire storyline in Meereen was essentially proof that she's useless at ruling and constantly needs advice on how to compromise. It was yet another city she waded into and took over with relative ease but struggled to understand the history of. In the end she was almost driven completely out of town until she returned to defeat the slave masters by force, again. It was self-defense but force all the same.
Now, however, she's got other things on her mind. She doesn't just want the Iron Throne, she incorrectly believes that she has a birthright to that chair. That monologue she delivered to Jon in her throne room that ended with the words "I was born to rule the Seven Kingdoms, and I will" was heightened arrogance at best and pure delusion at worst. She's a conqueror as opposed to a ruler, as Daario said in season six, and nothing that Daenerys has done since day one has swayed me from that opinion. In season two during her visit to Qarth she shouts "I will take what is mine - with fire and blood, I will take it!" By the looks of things she's not backing down from those words. Liberating slaves and murdering fascists is no longer on the table so she's got her radar firmly set on sitting in that chair, and she's willing to do anything to get it done as quickly as possible.
Daenerys is a new player to the Game of Thrones and it's changed her already as far as I'm concerned. She's now burning characters we sympathise to get that job done. Not just Jaime, Bronn and Dickon but young Lannister boys too. Lannister boys like the ones we got to know in the first episode of this season, the kids who'd rather be at home instead of fighting in someone else's wars. She's been impatient to use her dragons to seize Westeros ever since she had the chance to cross the Narrow Sea and Olenna's "Be a dragon" speech has essentially enabled her blood lust. She can and will crush anybody in her way now, ruling those who bend the knee by fear.
Along the way she will realise that as soon as she sits on that throne, someone will want to take it from her by any means necessary. My prediction is that she'll either be Queen of the Ashes or not queen at all.