Mise
isle of lucy
I don't think there were many openly gay/bisexual Princes in medieval Europe (who were also great warriors); I don't think there were many overpowering female warriors, and I don't think there were many princesses leading a mighty army in a slave-liberating crusade.
So let me turn the question back: do you think Martin added those and other elements to make it more appealing to modern sensibilities or do you actually think it is all an attempt to be more realistic?
Or do you think he just added those elements for the hell of it? Because it kinda looks like that, given how hodge-podge the whole thing is.
Some maybe for the hell of it; and they do work well. Others were transparently to suit modern sensibilities.

EDIT: I guess I should elaborate. I don't understand where the criticism is coming from. GRRM chose to include a smattering of female and gay characters who were marginally more empowered than one would expect to find in medieval Europe, as well as a host of female and gay characters that were more realistically portrayed than in the majority of other stories in the fantasy genre. He also chose to include dragons. Is the criticism (from Crezth, BvBPL, et al) that this implies that GRRM personally believes that dragons are more believable than a fully empowered woman with genuine agency? Is the criticism (from Luiz, et al) that GRRM added those marginally more empowered characters in order to appeal to modern audiences? What is happening here?
EDIT2: We can replace GRRM with HBO if the criticism is directed solely at the TV adaptation.