Can we get a Rioter to talk about Udyr for a second?

Now, im not denying he needs nerfs or that his Runic build is broken RN, but when did this happen? Ive been maining Udyr from season 2 and ive always been told hes a trash champion "only good for solo que" and how he is clitche and easy to counter (Still got to diamond with him so jokes on them)...

But now, i can barely play him because everyone suddenly is a udyr main this last patch and he is being banned all over the place because of ONE build. All that changed was Runic echoes. The previous AP jungle item went completely un noticed. Throw in an almost identical aoe effect and a bit of movement speed to it and now its broken ?

Now, Runic Echoes does Buff his Shield W and Phoenix R by a good chunk, but my questions is:** Is Udyr being nerfed because of this one build, or because he is generally over performing on any of his builds?** Udyr has usually had 3 other standard Builds: Tank Udyr
Tiger Udyr Devourer Udyr This nerf to his W and R is going to greatly affect all 3 other builds. If the root problem as to why he is too strong is Runic Echoes then why not nerf his AP ratios? Why the flat values? With the AP on RE he would still technically be a Nerf to that build, if they cut the values in half (especially since Udyr is not a champion who would otherwise build AP or other AP items), it would still be a hit to both his abilities in terms of values, without impacting his other builds.

My concern as an Udyr main is if he is being nerfed for one build, why hit all his builds? This will likely make the RE build even more optimal on him than it is now, and prior to the Runic Echoes build he really wasent nearly as popular or in the spotlight. I would like a Rioter to explain a bit more of the context of nerfing the Base values off his W and R and not the AP ratios instead. Especially considering he is a champion with his clear weaknesses (Very gold and level reliant, easily kitable, pure melee with no dashes, no game defining ultimate).