At the elementary age? Yes. They are looking at what looks interesting, or what their friends read. My sample size is small, but does include teachers at that level.
My understanding of restricted sections is that a kid can’t browse it in anyway. They have to know exactly what material they want from it, a have a good reason to get it out. Not just because they want to see what it’s like. They may even need to have that request okay’d by a teacher or parent. If something isn’t banned, but your likelihood of discovering it ever existed in the first place is nearly nil, and the process of getting access to it if you do discover it is difficult or maybe embarrassing, banning it is pretty much unnecessary.
