I wouldn't characterize what Linus has written as "lashing out". He's just making a sensible engineering decision about what the linux kernel is and is not. For Linus, the tone is way below the threshold of "lashing out".

There is a discussion here[0] about it.

I think China would profit the most from BE in RISC-V since they are now adopting the architecture[1] to avoid future problems with patents.

0. https://lwn.net/Articles/1036294/ 1. https://plctlab.org/en/news/014/