The very first thing you do to "prove" your case is spout an arbitrary number like a mindless drone. Why not you go play him for a bit and figure it out for yourself?
As someone who went from Mastery 0 to 5 (with 500 blue essence short of 6) with Ryze in less than a month, I had ample opportunity to figure out his new playstyle. His combo system has more rhyme and reason to it now. Previously, you just threw out his spells in whatever order his cooldowns would allow. Now there's a structure. His E is weak, but it has a very low cooldown and it sets him up to use his other two spells. His Q is the main source of his damage, and his W allows him to hit a stationary target. His ult now allows him to move himself and an entire team a short distance; very good for surprise engages and especially escapes. I can't tell you how many times it has saved me in just the one month since he was released.
Ryze's greatest weakness now is himself. You as the player have to figure out his combo system, as he's VERY dependent on it. His various combos have to be used in different situations; they are all laid out in his champion spotlight video. That is what people have yet to understand. They just throw out spells mindlessly and expect to get somewhere. It's not a difficult thing to learn; I figured it out in just two games, and that was enough to start tearing a warpath through toplane. That aside, he's also very mana dependent, so you have to pace yourself so you don't run out too quickly and have to constantly recall back to base to reload (something that even I still struggle with).
So yes, despite being a mere 450 IP champion, Ryze is surprisingly difficult to master. But... he is ANYTHING but weak. I've been a terror in the top lane with him, and he's now my go to champion if I'm just looking to win a game without contest or hassle.
Next time you want to complain about a champion, hang the meta game numbers, hang the win ratios, and hang the ban rates. Hang.... ALL OF IT, and go play the champion for yourself. NOW GET OUT OF HERE!