I don't object to the nudity, as it's usually contextually appropriate. Although it gets a bit silly that we've gotten so many scenes in brothels just so we can have lots of breasts and sexytimes going on. Silly, but not especially objectionable except insofar as it lacks any degree of parity. Where are all the hot naked men? The straight women and gay men who watch this show probably like their nudity, too.

At least that aspect got some service with Oberyn recently.
This show has had a handful of rapes depicted and, while I wouldn't give them all a blanket pass, they were usually in service to some larger aspect of the story being told. Dany's relationship with rape, for instance, has her witnessing what were most likely rapes at her wedding party, then experiencing Drogo raping her on their wedding night (and repeatedly thereafter, albeit not depicted often), and then her stepping in when Drogo's men were raping the women of a village they sacked. She endured a profound violation and found the strength to turn it around and actually change the behavior of Drogo and his men.
That's relevant. It's not gratuitous, but rather there for a purpose.
Sansa's near-rape during the riot after Myrcella's departure served a purpose in showing how desperate the people of King's Landing had become, though I don't find the scene entirely defensible given how over-the-top it goes. It's actually
less awful the corresponding book scene.
For Arya's story at Harrenhal, they pretty much removed the rape altogether, which was in the book mostly to show what monsters Clegane and his men are. Instead, we got the Tickler torturing people in a way that wasn't especially graphic though still hard to watch.
Joffrey's abuse of Tyron's "birthday presents" to him certainly drove home what a sadistic asshole Joffrey was, in a way you couldn't get from his "mere" insensitivity and callous violence. You got the sense before that he rather enjoyed making people suffer, but here you had an instance where he could force that suffering an intimate setting and truly
savor it. It was a layer to his character we didn't see previously, at least not at such horrifying depth. Even so, I still wouldn't call the scene wholly defensible since it's debatable whether or not we needed more graphic evidence of Joffrey's depravity.
Contrast that with having two consecutive episodes with rapes in them and yeah, it does seem a bit like the show's gone off the rails. You had Jaime raping Cersei, which was apparently just a big fuckup on the part of the director since it wasn't supposed to be a rape, but then you also had the events at Craster's which were
definitely meant to be quite rapey. What was probably intended to be a "sexposition" scene got punched up into a bunch of rape and casual violence against women, to the point that I couldn't even tell you what the Boss Mutineer talked about--I was too distracted by the senseless violence going on. These are characters we don't know, whose goals aren't quite clear, and who essentially got introduced in the most cheaply "evil" manner possible. This show has never been subtle but it's also not usually been so lazy. And in this case, yes, rape was absolutely a cheap, lazy way to get the point across that these guys are eeeeeeeeevil.