I’m going to make a guess here that you are referring to Demoralizing Shout. Apparently, it was generating a lot more threat than it was supposed to, for the first couple of weeks that Classic was out.
I do not think that correcting that was a nerf, and warriors are still warriors 
True that there don’t seem to be very high population numbers of druids, and of them not all are willing to tank, but they do make excellent tanks, nonetheless.
Have a look at Elite’s Warrior tank guide for some tips on getting started, and hope that helps. If you really don’t like playing warrior though, then I hope you find something that you do like. Hunters are pretty fun 