My sub-4 SUL kit is the same for 1 night or many. If I want to go that light, I'm set for a Cascades summer trip and it takes several nights before any changes are needed (and then it's only a little bigger pack). Yes- it's a summer list. But I have a range of gear and my setup is different based on the trip, location, and time of year. I pick and choose and put it all together how I like. Solo, mountaineering, winter, snow shelter, family trips, bike touring... the kit is always different based on the trip. (wait- is that why I have 8 shelters, 7 packs, 6 stoves, and 5 bags?!?)
I've had "survival trips", but I don't care much for those. I'm actually quite comfortable with my sub 4 load and I feel there's a good margin of error. But you're right that it's specific, and I usually don't care to be that minimal. But it's not unsafe, in my opinion.
Personally I enjoyed the exercise of getting lighter and more minimal and my skills have increased as well. But who really cares how light you are? It's all about what you enjoy- some enjoy getting anal and obsessive like me, but others don't.
So yeah- hike your own hike. Find what you like, and what you want to accomplish, and be cool with that. I went sub-4 to put down 50 mile days. Stupid, sure. But that's what I wanted to do. Other times my base weight is over 50 pounds, if you include my 30 pound son on my back and all of our gear. It's all about having what is right for the trip and being a happy camper!
So try your list during easy conditions if you like- I'm sure we would all learn from your experience!