> a cpu backdoor is not akin to a crouton

Of course not, croutons are generally appreciated, while backdoors are only appreciated by ignorant people, hackers, spies, and dictators.

> your stupid example

That's harsh given that you don't even seem to have processed what the example was conveying:

> you ate it right up until the moment you realized it

So then let's try again: once you realize the turd is there will knowing it's Russian, Chinese, or from the US make a difference on whether to keep eating or not? On whether to complain or not? Because GP claiming "Backdoored by whom is an important real-world distinction" suggests you, the customer, keep eating and don't complain if you like the answer.

I find the analogy to be reasonably valid.