^^ Didn't "defend" the status quo. This thread is not about defending since you weren't attacking anyone.
In fact, in my very first post I said that cracks have been slowly developing for a while since these 4 have been on top forever. The obvious one is Federer getting old, and he's no longer a lock for semis, which obviously leaves room for others. However, what I did say is that as far as the other 3 is concerned, there isn't enough evidence. Murray is struggling due to the injury he sustained last year. I'm sure at this time one year ago, you could have argued that there are cracks in the top 4 as Fed is declining and Nadal was out injured for a while. There's somewhat of a similar situation here.
What I strongly disagree with however, is that other people are making a move. The top 4 being shaky (to an extent) is one thing but people making moves is another. In other words, the top 4 being shaky means more losses than usual, which is fair. But people making moves implies that specific players will not only deliver the occasional upset, but are actually here to stay, and perhaps even take their spot. This is what I don't agree with one bit, and when I asked you to name a few (other than Stan, obviously), you couldn't. The younger guys are not good enough right now, which leaves us with the Berdyches and Tsongas of the world. Sorry, I don't think you'll be seeing them seriously challenge for majors any time soon. Meanwhile, Del Potro is struggling with injury.
And no, Andujar taking Nadal for a wild ride counts for nothing because A) He didn't win B) Nadal still won the tournament C) Andujar is hardly among the "sans culottes" since he's irrelevant to this conversation (in other words, him winning would mean no more than Horacio beating Rafa last year. An upset. That's it). If "wild rides" are enough proof now then it says a lot really.
Not defending anything. I'm just questioning the foundation of the argument.