I'm inclined to agree. x86 seems to have the most performance still "left on the table" so-to-speak, at least of the major architectures. My fingers are crossed that the next 5 years of RISC-V development come swiftly so we can finally kick ARM back down to the microcontroller market that it performed best in. I seriously doubt ARM will be able to compete when x86 chips are at the same transistor density, we might need an even bigger scam performance metric than "performance-per-watt"... "performance-per-watt-per-area" perhaps?