Quite bold I agree, and boldly going where no bullshit has gone before. I've had friends using old chinese shit floppy kits from around 1994 without a fault SNES side, and not too many years later some earlier NES/FC stuff too. I've had a couple powerpaks and it wasn't an issue, but maybe they're setup right?
Let's say he's not trying to get attention blowing up an issue far more than it is actually worth even if it is true, it's being in a way to get some dramatic attention and is spreading around old game forums like some damn trojan. Even then on his own site, he says if he didn't cover an everdrive, it's safe, so the N64, GB, GBA they're 5v setup are fine as are a select others he wrote as 'GOOD.' Great, they work and to the specs he's bringing attention to. But in the end, how many systems are really going to drop dead from this and can be proven? What if the shelf life of a SNES due to some on board chip is 35 years, and then he comes back 10years from now going 'told ya' and the thing is you'd really probably never know or care. By then as madman put it, probably won't even have that shit anymore. Either won't care, or use some other modern method to simulate the shit in a smaller footprint.