I live in Upper Michigan with a 2016 and the side steps continue to work perfectly bilaterally, and they salt the Devil out of the roads here. They haven't rusted and are very wide and stable. I'd recommend them to anyone and I use them all the time.
Oh, one other thing (that makes sense when you think about it) is that they don't come out on all of the terrain settings. I remember in the beginning I was worried that they were broken when they didn't come out, but I was on mud/ruts or something like that.
The only thing I do NOT like about them is that there's no way to make them stay deployed with the car in neutral and the doors closed. I'd like to be able to have the car wash blast them off, but can't figure out how to make them stay "out" short of deploying them and pulling the fuse, and I'm not about to go through that hassle.