I'm not entirely sure what the FDA does exactly besides approving medications. And do their decisions apply to the entire world or only to the US ?
[...], on the topic of sporadic benzo use, for what it's worth, I would NEVER recommend benzos either because I know how horrible they can be and there is a lot you do to help yourself in case of insomnia or anxiety without benzos or any pill for that matter. And if doctors in general would have more at hand than just their precious pills, it probably shouldn't be necessary to hand out sleeping tablets or tranquillizers anyway except maybe in rare situations or when every other therapy has failed. But if a person is already taking benzos or considers taking them for whatever reason, it is important to know how you can take them safely, which I believe is perfectly possible (unless you have a paradoxical reaction right from the first dose, and that is very rare) and only on the condition that you have not reached tolerance and have not been dependent before, which wasn't clear from the other thread were the argument occured (the OP kept saying he took them sporadically on and off). Also, while tapering you need to take benzos anyway, and if you're taking, say, Xanax, you need to know about interdose withdrawal and stuff.
My guess is that so many parties are involved here that it is difficult to point out where the problem lies exactly: the FDA, the drug companies, the DSM people (= drug companies), hospitals, psychiatrists, doctors etc. In the end, it's all about selling a product and making money on sick patients and keeping them sick or making them sick so they need treatment, I guess, and everyone who benefits from that system is to blame, however small their part in it is.