I actually think the Korean automakers' comments are very interesting. It was along the lines of:

"Yes, I'll admit, BYD is making excellent cars. But we're certain their pricing is unsustainable."

And that is the pattern of many Chinese industries. They go absolutely all-out on the "brutalize the market upon entry, with no shame, then tighten the screws once competitors are damaged" approach. They take it to an extreme.

Temu is an example everyone knows.

...So maybe Japan does need to do something drastic, in the very short term. Yes, Toyota dug their own grave here, and they need to fix that. But perhaps they need to do something unsustainable, too.