That's pretty wild. Total guess but seems like a supply chain attack to put in small amounts of explosive. Hopefully at least one failed to detonate so it can be dissected to see how it worked.
The zionist entity has used this tactic in the past to kill a bombmaker: https://en.wikipedia.org/wiki/Yahya_Ayyash#Assassination
I do kinda like the idea of using CHERI to run all this C code with memory safety properties enforced by hardware instead of rewriting it all in rust, but whatever either works