One of the benefits of growing my own food (I did mention my backpacking minimalism bleeds over to my regular life ) is that I often have an abundance of wonderful, fresh produce that takes a few minutes of prep to ensure I have nutritious, delicious backpacking meals.
I will agree with your earlier point regarding "Ultralight backpacking can evolve over time as experienced backpackers hone their kit and reduce weight". Heck, that's exactly what I did. I started off hiking the Yorkshire Moors / Dales with my dad, aged 11 with Army surplus gear and, quite honestly it sucked. I had wool pants that itched so badly and when they got wet, as they often did, the crotch hung around my knees. After a stint in the Royal Air Force and backacking in the Artic Circle (Norway and Goose Bay, Canada), Falkland Island and, the hot and sweaty jungles of Belize, I decided that I needed to radically change my philosphy and kit. This wasn't an overnight process and it's been a lot of trial and error. Now though, I'm at a place where I can go out in sub freezing weather (last winter for example I thru-hiked the Laurel Highlands Trail in 3 days with a sub 20lb load with nightime temps below 10*F) and was perfectly comfortable.
As I mentioned earlier, I have a friend who I recently introduced to backpacking and after initially buying 'traditional' gear (packweight was around 30 - 35lb for a 3 night trip) he's bought in to ultralite in a big way. It really does irritate me no end that he spends more time buying lighter gear than he does being out in the woods using the kit he has and honing his outdoor skills. But to say Fast and Light is hysteria is doing the vast majority a great disservice.
Just my 2c worth (adjusted for inflation)...