[EVERYTHING] The Mad Queens

I read something interesting in one of the essays regarding Dany's campaign in Slaver's Bay:

"It’s also interesting to me that the possible war crime Daenerys commits in Meereen is sometimes cited as an example of her madness whereas the war crimes of others such as Tywin Lannister are often lauded by some fans of ASOIAF as “necessary evils to maintain order.” My opinion of this is that Daenerys is viewed in a negative light because of the cultural constructs that we have for gender roles – Women are traditionally nurturers and those that break their societal role are labeled as hysterical or mad." [Cite: https://warsandpoliticsoficeandfire.wordpress.com/2013/10/22/a-complete-analysis-of-the-slavers-bay-campaign/]

Is this really the case for the female characters of GoT? It certainly rings true with both Cersei and Danaerys. Were some of their actions horrific? Yes. Were they ill-conceived and without long-term benefits? Sure. Were they insane? I don't see that. Similar actions from a male character would be seen as cruel and ruthless, but not insane.

Yes, actions of Joffrey and Ramsay do go into the "mad" territory. And yes, Lysa is crazy with her obsession with Baelish. But nothing Dany or Cersei did seems to rise to that level of madness. Is it really just latent sexism on the fans' part that sees them as Mad Queens?