I find a completely silly claim but I guess as a CEO you need to talk your book.

Here is another interview with Jim Keller where he explains why instruction sets doesn't matter that much:

https://www.anandtech.com/show/16762/an-anandtech-interview-...

That's not exactly my takeaway, e.g. he says this in that interview which is pretty consistent:

> So if I was just going to say if I want to build a computer really fast today, and I want it to go fast, RISC-V is the easiest one to choose. It’s the simplest one, it has got all the right features, it has got the right top eight instructions that you actually need to optimize for, and it doesn't have too much junk.

Yes. Because it has less legacy, it is easier to build for if you are going for on scratch. The point is most code is the same handful of instructions.

This man knows exactly what he is talking about. He was responsible for designing the original AMD Athlon 64. He worked at apple to transition from Generic Samsung ARM SoC to their own Apple silicon which is the base for modern M1 Apple silicon. He worked for Intel (we'll see his work in Lunar Lake, Jim Keller's Royal Core Project). And most importantly he worked again at AMD and gave us Zen architecture.