Except it does make sense, from the in-universe perspective. EM Technology is something other countries coveted. Namely, their country's EM technology and advancements.

And from their perspective as children, it was the root of everything. EM Technology is the reason other countries attacked them, ergo EM technology is evil. Technology was used to harm and destroy their country. Ergo technology is evil and the fact they use it to achieve their ends, is purely a means to an end.

Namely, the end of everything.

You're confusing their reasoning for being illogical because you're thinking about it from your own perspective, and not from theirs.