I am not sure why this thread has to be called "dire".
Maybe the statement in the title is not exactly true, but definitely it is worth discussing. Obviously a lot of it is just speculation at this point, as Australia are yet to play a test without Warne, McGrath and Langer and we don't even have the smallest sample size yet to make some kind of call, either way.
Having said that, I think it is only fair to agree with what SJS had to say on the issue. Australia WILL NOT be the team they were without these guys, esp. McGrath and Warne. That goes without saying, IMHO. But what we may see is that Australia may adopt a different approach to their bowling... They may just throw in 4 quicks and use Andrew Symonds for variation along with Michael Clarke. What worked for the windies in the 80s could work for the Aussies now. Esp. if the spinners coming through aren't good enough and the seamers are. And FWIW, I do think Tait, Lee, Johnson and Clark would be a potentially awesome attack and perhaps their best option to beat India.
And reg. India, we have been doing well in tests for a while now and it is something that can be viewed either way. You can see that the batters are not exactly scoring heavily for us, def. not the big 4 at least and we are still winning. Maybe it is a good thing that we are learning to win even without the contributions of these guys, so that when these guys do get back in form, we will be that much better off. Conversely, one can think that the best of these guys is well behind them and that this is all they can produce at the moment, and that against a strong side like Australia or even Pakistan at home (you cannot under rate their bowling), they may struggle.
For me, it is all a bit too grey at the moment and we really don't have anything to go by as yet. Let Australia play a few tests, let us see if our big boys can still produce the runs for India and then we can perhaps decide.