Mostly agreed, although I have no issue with Yukon being a moderator. Personally I find death warping a lot less interesting/fun than just save quitting; I could understand the argument more if death warps were also not allowed, but it's basically the exact same thing as S&Q but slower.
A Save & Quit category (or subcategory) would be sick.
The whole point of "Any%" is literally whatever is fastest without actually like modifying the game. Save & Quit is a feature of the game so I don't see what's wrong with using it. The gameplay is "different" not "inferior". It is a little strange that the dev is a moderator, I can certainly see the conflict of interest. A dev already has power to change how a game is played and it's actually their responsibility on a mechanical level to influence that rather than the meta level. That's my two cents.