I’d like to see these chips benchmarked in the wild as well before getting too excited, but the claims aren’t that implausible. Incidentally, this approach is why M series chips are so much faster than x86 ones. Apple uses SoC architecture which eliminates the need for the bus, and they process independent instructions in parallel on multiple cores. And they’re just building that on existing ARM architecture. So, it’s not implausible that a chip and a compiler designed for this sort of parallelism from ground up could see a huge performance boost.