People are to reliant on technology to solve their problems, conquer their enemies, ect.
Yeah it's called progress, it's why we don't [censored] in buckets and hurl it out into the street below like we did 500 years ago.
Once their tech is taken away, how will they fend for themselves? Answer: they can't, or will fail trying.
The idea is that they don't need to, how many people die due to illnessess and afflictions that medical science can cure?
The Legion trains and learns how to rely on other means besides technology.
They willingly shun devices which could improve their society, lives, and military all in the name of some ridiculous ideology; that is their great weakness.
Look at the great war for example. The many factions thought they could rely on nukes to destroy their enemy. What happen was nukes, technology, destroyed themselves instead.
No, nukes destroyed the world; everything from domestic labour saving devices to nuclear weapons cannot be lumped together into a convenient catagory simply so you can defend the Legion.
If the invention and use of nukes were never invented, humanity as fallout knows it would have never happened. World wide massacre would have never happened. The end of mankind (or close to it) would have never happened.
Nuclear weapons are a natural out-come of nuclear fission technology, end-off. Unless your solution is keeping the world in a state of complete stagnantion you have to accept that as fact.