I too am taught to dry steer by my instructor. I had an instructor a few years ago (I gave up learning to drive for a bit) who would tell me off for doing it accidently but this instructor now encourages me to do it on the parallel park and bay park. He's taught it this way for a while now and says he has never had any examiner fault any of his students for it. He rolled his eyes when I said that my old instructor used to be really picky about it and says that yes it used to be an issue in old cars but that it's different now in new cars. His car doesn't make any creaking or groaning noises or anything when I do it. I can do the manoeuvres without dry steering but he says that on the test I should do it to make really sure that I get it perfect. He's one of the top rated instructors in my area, almost impossible to book lessons with because of how busy he is and has a waiting list, has a list of qualifications as long and your arm and has been teaching for many many years. But yea, I'm a bit confused/conflicted on it becasue I know other people say not to do it.