Hell naw, that's an arbitrary take. There's no "child things" or "adult things", nor "male things" or "female things", just things, and the "male"/"female"/"child"/"adult" is an arbitary tag we put on them.

And even if there are some things that aren't so good for the child to see, the only correct way to address that is educating them, guiding them, listening to them and, over all, treating them as humans, the "we need to block this to children" is totally adultist.