If we wanted secure products, we wouldn't ban devices. We'd mandate they open their firmware to audits.
problem is: how do you prove the firmware in the flash chip matches source? And I do not mean me, with a disassembler and a pi pico to read out the flash chip. I mean the 70-yaer-old corner shop owner that buys this router to provide free WiFi for customers?

> how do you prove the firmware in the flash chip matches source?

Trusted, qualified independent experts: Ala Underwriters Laboratories.

Volkswagen emissions scandal - Wikipedia

Someone did go to jail, so there's at least that.
Yes. But a lot of people still got cars that were not as represented. So if we follow the same pattern, somebody will go to jail, but most routers will not be running verified or safe code.

Do you apply the same scrutiny to the food you eat?

Some trust has to be created through testing standards and the law, but generally we do believe what the label says in day to day life.

In so far as I cook myself? Yes
The routers thing? That's probably just a scam to get donations to the Trump Family Bunker/Ballroom in DC or other pet project.