It's a big claim, but there hasn't been any proof that he actually died. Thankfully, he's probably just taking a break from the Internet
It's sad Byuu is gone but they don't represent the SNES becoming an artifact of history nor does a big thread about them belong in a memorial thread about Masayuki Uemura. There are many more SNES emu programmers who will take their place. That being said. RIP David Kirk Ginder.