Is the sophistication of the technology used in the latest attempt to
bring a US jet down. This wasn't a stick of dynamite disguised as a
sausage in his pants.

From what I've been able to find, the chemical used and the way it was
dispersed in the kid's clothing was undetectable by any current means.

And if it had worked properly, would have been quite forceful and
would have likely been effective in its intended job.

These aren't technologies of cave dwellers or luddites. This is very
advanced, clever use of stealth weapons.