Maybe so, but it is grossly irresponsible to further compound the problem by the unpredictable effects of drugging them.
There are few people on earth who couldn't be diagnosed with some disorder or another, given sufficient observation.
But what choices are there? You can't institutionalize them; you are forced to mainstream them into the school system. Are we over prescribing medication? sure. Not providing the proper follow-up care? sure. But it would be truly grossly irresponsible to do nothing. I don't buy that the drug and not the underlying problem is the primary problem. Further, a lot of these drugs have had about a bazillion doses taken by kids so side effects should be well known by now.