Oh trust me I know this champion like the back of my hand and I would wager better than you.
I also know that the skill you max first is the one you spam the most. You don't break even on that mana cost till late game. This means you're going to suffer more with this mana set up than before. This also doesn't take into account the cost of keeping your passive up or stacking it before ganking. As a result, Udyr will still have to talk most of his blues until late game which, by itself, is a massive disadvantage.
I know how to dodge skill shots. I don't buy rageblade either, But will have to to make use of all this once every 3 hits nonsense on all his skills now.
I have built Udyr 100% damage exactly once. It was hysterical. But never again.
If you can't see blatantly that these changes address non of his weaknesses and, in fact make one of his major weaknesses even worse, you are fucking blind.