Is modern tennis about slice and dice and approach the net like old school grass court tennis? NO.
Is modern tennis hitting loopy topspin shots with one handed backhand? Yes
Is modern tennis taking it early and being a machine baseliner with two hander? Yes, This is the two styles we see coming to the fore in the modern game.
In modern tennis the greatest quality is putting the ball in play. Modern tennis favours compact swings and consistency. Returning is much easier with two handed backhand and guess what that is the second most important shot in tennis.
Why dont you understand? You have debated this for ages and you still dont get it, its pretty simple if you weigh the pros and cons.
Being 5"5 is a height which is inferior to 6"1 in tennis terms. Fact.
Not sure what you don't understand.
1hbh offers unique advantages to 2hbh. 2hbh offers advantages not found in 1hbh. Swings and roundabouts. It is up to the
player to decide, definitely not up to
you to tell everyone who uses a 1hbh that they are an idiot who will never improve.
1hbh can get increased topspin, and increased angles. You lose out on consistency in that the swing is longer than 2hbh so more can go wrong. But you
gain in consistency in that you can put more topspin on the ball, so the ball can be hit higher over the net, and has less chance of being hit out.
Offensively, 1hbh loses out on being able to dictate the play by taking the ball early with aggressive court positioning (unless you hit the ball early like Federer, Blake and Haas). But it gains in offence by being able to hit sick angles due to that increased topspin.
And why do you care about aggressive court positioning, anyway? Taking shots on the rise is inherently more risky than standing back and being passive - so if you're truly into defence and consistency above all else as you seem to be claiming, then you would not advise anyone to hit the ball early.
Ultimately, the 2hbh can't hit shots like this;
http://www.youtube.com/watch?v=FWoKA21Bm4k
And shots like these make watching tennis fantastic, so it is just as well that you aren't in a position to succeed with your objective of coaching the 1hbh out of the modern game.
I have no problem whatsoever with people playing like Gilles Simon. I would just have a problem if
every single tennis player in the world plays like Gilles Simon. This seems to be what you want.
Tennis is at least partially about individuality and expression - at all levels in the game. Many different ways to get the job done and 1hbh is still a valid method at the very elite, as Wawrinka has just proven.