I don't know of that anime but yes, I have felt that.
A good example would be Mugen no Juunin: Immortal. It has a fair amount of pointless, grotesque and vulgar scenes that don't add anything but only detract. Often there will be rape in the story both were it does not serve a purpose but even where it goes against the point the anime tries to make. Like right from the start the protagonist has her father killed and her mother raped and abducted right in front of her so goes out for revenge and the story tries to equate her lusts for revenge with the act that set it off in the first place they try to make it look like she is just as bad as they are or worse. If they had just killed her father and left it at that then sure, but once you add rape into it it becomes incomparable.
The only reason they would add things like this into it is for there own sick enjoyment.