However, IMO, the "cost" of ignorance such area is not that bad either. I will let them live their way to be honest.
The problem with tech is that it's modularity and dependency on other people/tools/hardware/etc ultimately requires trust.
> in place for more than 20 years.
Far longer than 20 years. The idea of trust, privacy and security has been discussed for a long time. The complexity of security on just on one specific technology ( compilers ) was discussed in the early 1980s by Ken Thompson.
"Reflections on Trusting Trust"
https://news.ycombinator.com/item?id=13569275
Compilers are just one part of a complex ecosystem. Now imagine having to check ABI or the physical chips/hardware themselves. Where you require sophisticated hardware.
The motto of technology is "In Trust We Trust".