Of course it's opinion. My question was "what the hell happened to music?" I probably should have said, "pop music", but a very possible answer to the question is simply, "Nothing."
In the days before the internet, the only way to find out really about "bad songs" was to hear them on the radio or someone forced you to listen to it. Now we have youtube and the like, with rating systems to collect popular opinion and it's easy to share.
I think the idea behind this "Stupid Hoe" song with the phrasing, the weird rhythm, and the babble is to fit the title. In a nutshell, make a "stupid" sounding song. Because actually, lots of Minaj's other tracks, while not my favourite, are still way better than this musically.
Which I guess could be viewed as genius in one regard, but it seems many people don't enjoy listening to it.