Shouldn't we ask who gave him power in the first place? I believe they knew how he was gonna act, the circumstances.
You SHOULD check up on the story how he got the powar, an interesting one. Enlightening even. It also kinda was an expected entry in the whole totalitarian power vertical he built over the years.
As to monarchy... WELL, lets see:
1. Power vertical - one guy never makes mistakes, laws are changed how he wants - check.
2. Cult of personality - check (what with all the bear riding!).
3. Bunch of suckups around profiting from all the plebs - check.
Why not a monarchy? Well... maybe "russian" monarchy (a.k.a. cleptocracy), but you can call it that way if thats more understandable to you
As to "who gave him power" - there is a very fine saying in Belarus/Russia - "its not important how anyone votes, its important WHO counts the votes"