Considering that Bethesda owns the Elder Scrolls, approval of things that Zenimax Online does with their game makes sense.
They're not approving everything that goes into the game.
Okay, I am confused.
Exactly what aspects of TES:O does BGS approve of? 
All I know is that ZOS and BGS are subsidiaries of ZeniMax Media Inc.. This means that, after all is said and done, ZMI, not BGS, has the final say in how TES:O will be handled by ZOS. So, BGS cannot control how ZOS handles TES:O, if ZMI has given them the freedom to do as they please with TES:O.
The real question is the one which we started with: Is Bethesda Gaming Studios satisfied with how much Zenimax Online Studios is listening to their input and suggestions for TES:O? And, if so, then how would one know if BGS's approval is
genuinely the case or not?
As Umrahel said:
Are there differing opinions on certain game elements that will be present in TES Online? No doubt. Everyone has an opinion, devs are no different from that. Are there disagreeing views? We'll never know, because their PR department wouldn't do a good job if internal strive and issues would come out to the open
Source: http://www.gamesas.com/topic/1372668-why-we-are-mad-the-thread/page__view__findpost__p__20756113