steven, sounds like you are fond of junk food, something I try to really avoid when backpacking, for what are to me very obvious reasons, but possibly not to others. I don't want to put junk into my body when going out into the wilderness, it lessens the experience in my opinion, quite significantly, but it seems popular with this generation so that's life. If you really like that sort of thing, food based on basically natural whole ingredients might not be your cup of tea, I guess. One of the things with junk food is that it triggers some addiction type responses in the body, the salts plus sugars are basically calculated to make you crave them, not how normal healthy food works at all. So when we are addicted to that type of non food, we find that real food is 'not satisfying', for about the same reason a smoker finds a nicotine free cigarette 'non satisfying', or a beer drinker non alcoholic beer, and so on.
I've never thought of trail mix as gorp, it's just trail mix, a nice descriptive term. Granola has no place in trail mix, not sure where you came up with that notion, granola to me doesn't have any place at all in my backpack, it's heavy and not nearly as good as real rolled oats.
The basic idea behind trail mix is to find a mix you like, so you can safely assume the mix you found was not a good mix, and I can agree, it sounds about as bad as you can mix up, so it's no surprise you found it vile, but concluding that gorp is 'bad' because you made a really bad selection for your trail mix hardly seems to be very sound reasoning.
Last trip I did this, pitted dates, raisins, dried date rolls, dried skirt steak diced into little pieces. and dried bananas for the potassium, I think it's potassium. I mix it up every morning depending on how I liked the day before's batch. Last long trip I did I tested a super dry mix, I dried the already dried ingredients more, and by the 6th day, the stuff felt like sawdust in my mouth, so this time around I carried more moist weight, and more animal fats, and that really fixed the problem, for probably just a pound or a bit more starting weight.
I would do nuts but I can't really eat them on the trail, mild allergies, I'm very sad to say, because I love them, and they are pretty much the best source of fat/protein I can think of for trail food. Nuts are stunningly great sources of energy and nutrition, it's really hard to beat them. Peanuts are about the worst 'nut' out there, it's not an actual nut at all, just some ground thing. Good nuts are almonds, cashews are good but are a bit mealy, walnuts are pretty good. Macadamia nuts are absurdly rich and decadent, if I could do nuts, I'd toss in a few every day as a reward to myself. Nuts are pretty much pure fat and protein, exactly what you want on the trail, with some carbs from the dried fruits. I used the dried meat, which was a very fatty cut, to substitute for the nuts, and that worked really well.
I also did pemmican, about 3.5 oz a day, which was also fantastically good, note, this is all real food, mostly unsalted, or super lightly salted, so you won't get that mass produced corporate salt/sugar thing going, which a lot of people have grown to crave. The only drag with pemmican is it's pretty hard to make, but that's what the original wanderers in this continent used, along with the early explorers and trappers, they knew what was up re all day travel and nourishment. I knew the pemmican was working when it took me either the same or less time to walk UP the mountain I had come down the day before, which threw my schedule off a bit since I'd given that climb 2 more hours than it took. That's what happens when you use real food sources though, I suspected it would be like that, and it was.
This mix made me able to walk further every day than I did 20 years ago, with better energy, over tougher terrain, the pemmican is a big part of that though. I also had dried bread that I put jamon serrano/prosciutto on, along with some cured Lomo, those were insanely good too. I'm glad I've learned about real food as I've gotten older, always tried to use it in the past, but this year was a real step up for me in terms of quality of my diet on the trail.
'power bars' likewise are an oddity invented by and for corporations, a few dates and a few nuts are a power bar, basically, give or take, only way better for you, and far far cheaper, no wrappers or other processing either.