They didn’t misspeak, they anthropomorphised. People do that all the time, and calling it an error is pedantic to the point of being incorrect.

Also, that statement was probably in Japanese. You can’t read that kind of implication from it, even if it would have been correct to do so in English (which it wouldn’t)

I didn’t say anything like that. The black box is physically much bigger than a modern SSD, but stores far less data because of all the extra problems it has to deal with

The black box isn’t like a modern hard drive, with terabytes of storage. They’re often old, and even the modern ones need to put so much effort into protection against things like fire, seawater and collisions that they don’t have as much space as you might imagine.

They have to rely on someone going out of their way to take the box out, or shut down the plane, because the alternative would be for them to have some way to decide for themselves to stop recording. If they could do that then a false positive would cause them to miss potentially important data, so they’re designed to keep going until someone makes it stop