I really agree with Borges!
As a child, in the late 80s and early 90s, I clearly remember a far more conservative JW church, in every way. Conservative elders, conservative R&F. And the GB was indeed authoritarian (in the conservative way); just read Ray Franz's account in CoC.
But, there was a difference. The local elders had more real authority. When I was a secretary I used to read old correspondence and files of the congs I served: there it was apparent that the elders did a lot of actual handling by themselves. They had *actual* opinion, and their opinion weighed heavily.
Now this has vanished. The current GB has taken the handling of each and every congregation as personally as ever. In this aspect, yes, it has become much more authoritarian. The GB now is de facto the BOE of every congregation. The local elders just carry out the endless inflow of ridiculously specific written instructions by the GB. The talks in meetings and conventions/assemblies are also more specifically layed out by the GB. (if you've taken a look at new talk layouts you know what I mean)
As a prime example: think of the recently leaked JC video that was shown in the Kingdom Ministry school. Would you imagine a 70s, 80s, or even 90s GB sending a video showing how exactly the elders should do every little detail of their job? This example I think illustrates how much more the GB is trying to handle all matters by themselves. Now, why is that? Don't they trust the BOEs anymore? Are they scared? These are good questions for another thread.
So, my opinion is: the GB is more authoritarian in organizational matters, but not behavioural ones. They succeed in being organizationally authoritarian because of the very structure and hierarchy of the religion. But, they don't succeed in being authoritarian with regards to the JWs way of living, because the world changes (to the more liberal), and so does every human on this planet, even JWs. For instance, they tried to be authoritarian with the Internet: they failed. Now they embrace the net. They tried to be authoritarian with porn: they failed (they still try hard with that; good luck). They tried to be authoritarian with studies: I don't think they succeeded; most jw youths in my area see studying in college as something really natural. They tried to make every jw spend all their time in field service: instead, they had to lower *their* standards in order to keep their numbers of auxiliary and regular pioneers.