I think you have a great point, but I still subtly disagree. One thing free market dynamics have not established is proper responsibilities for failing to build

I think you have a great point, but I still subtly disagree. One thing free market dynamics have not established is proper responsibilities for failing to build stuff to specification. Tools are simply tools, and tools like Flipper Zero are fundamentally usable in legal scenarios. Other tools like cars come with locks that advertise providing some level of security: if cars fail to meet that, it is manufacturers' responsibility for the theft (nobody would claim that if a truck came by and simply towed the car away). Now, neither the buyers have effective means to choose secure products themselves (it requires deep knowledge or possibly open protocola and source code for cars), nor do the manufacturers worry enough about it. When markwt does not make things happen, you make it happen with legislation.