My point was that the test is performed on a fixed object at 40mph, not a moving object coming at you at 70mph while you are also going 70mph. Obviously if you hit an oncoming vehicle it's going to absorb part of the impact... but it's also going to carry more momentum than a stationary concrete wall. I'm not saying that it's the most important test in the world and that you are instantly going to die if you get a truck with a poor rating. However, it is something to take into account when buying a new vehicle of any type. I'm sure the new chevy/toyata/dodge will also have good ratings after the next redesign. Furthermore, it's not like people don't die hitting fixed objects (they account for like 20% of all MV fatalities).
While I haven't been in a whole bunch of car accidents in my lifetime, I've never had a body panel that was "repaired." Granted, it's easier to repair steel than aluminum, but if you do serious damage to either you are often replacing the both of them. Get a lot of little dents and need minor repiars? Don't hit shit, it's free (or hit it and take it as a badge of honor... i.e. offroad).
On a $65k truck... well put it this way... I didn't even bother to ask what my insurance rate would be before I purchased... I care that much. The corvette that it replaced had quite a bit of carbon fiber and an aluminum frame. It's cheaper than the corvette to insure. Ironically the corvette was (marginally) cheaper than my 2008 Evo X to insure, despite being worth 3x as much. The Evo is made of aluminum and steel.
But since you asked, the 17' F150 (an XL model) was ranked in the top 20 cheapest vehicles to insure in 2017 (by a study conducted by insure.com). The Chevy/Dodge/Toyota weren't on that list (though I doubt that they differ significantly enough to matter to anyone buying one).
I get that my bed is more likely to tear on impact than a steel bed. I don't care because I'm not going to drop 800lbs of (fairly expensive) pavers on it or throw a 55lb specially selected (antique) snap-on tool box into it corner first. Using a good bed-liner pretty much eliminates this issue even if you are doing stupid shit. Furthermore, even people that are using these trucks every day for work aren't likely to intentionally abuse them. Even if they do, an aluminum bed with quite a few small holes and dents in it performs 100% exactly the same as a brand new one.