You seem to be assuming that the "industry" operates as a collective, and that unscrupulous companies give a crap about you, me, their customers, or other sellers. Those sellers simply lie, so there is little the good guys can do to combat that.
The tactics the bad guys use are simple: cherry pick numbers, misrepresent them in whatever fashion they think might sound good to uneducated buyers, and then don't waste time standing behind their products. That doesn't mean there aren't good sellers out there, or that you shouldn't invest a bit of time educating yourself so you can benefit from reliable and efficient technology. CobKits already said something important - that we all got burned buying crumby LEDs at first. You're on the right track though, as this forum is a great resource for figuring out what's bunk and what's worth your money.
The bad guys sell crappy lights or, at best, massively over state their specs. What they do would be like Nissan saying their Maxima sedan is a 750 horsepower car. The logic behind that would be that you could rebuild the internals and add a big honkin' turbocharger and intercooler system, new injectors, new ignition system, a new computer to control it all, and a new transaxle to transfer the power to the wheels, and get 750 HP out of it. This assumes that the engine block could handle 750 HP and ignores the fact that the engine, as sold, puts out about 300 HP at the crank, or 250+ at the wheels. By your logic, Nissan making a wildly false claim would be the car industry's fault, make GM and BMW untrustworthy (in your eyes), and might convince you to stick to a horse and buggy because you know 1 horse = 1 HP, by definition.
I don't mean to be as confrontational as I probably sound, so I apologize if you see it that way, but my point is that the good guys in the LED "industry" do promote real, quantifiable standards, and should not be held at fault for the scammers out there, as they have absolutely no way to force the shady folks to stick to truth, facts, and science. You also seem to be saying that the rapid evolution of LED grow light technology, and the advancement of emerging or future components, somehow invalidates current products, which I don't understand; yes, LEDs are changing all the time, but if particular COBs or whatever are good today, they won't be obsolete. Of course you can stick to HPS or whatever technology works for you, which is never a bad idea, but I dig efficiency and lower costs over time.
Again, please take no offense, as I'm just some idiot on the internet trying to put things in perspective, so pardon the manifesto. You do have to buy form a good source (there are lots of them), but if you do it right, LEDs can do anything HPS can do - except heat, LOL.