That bolded part is how it works, everyone knows this. Plenty of places are too hard to go into at certain levels.
I never felt a huge sense of hey watch out this area is dangerous. The only time I did that I stumbled upon a dragon priest in a dragons nest and there was a Hagraven in a forsworn area. The entire area should have more of a challenge than a few random powerful foes running around. I remember in Morrowind going into the Ghostfence at level six and it was pretty for my person at all.
I know Bethesda has designed the leveling scaling better. I said that in the post above and I also said it can be improved. I am not blinded by how amazing I feel this game is it has flaws and this system can be improved.