I think we all get into trouble (even since the hobby began) when the words "how games should be run" are spoken. That was one of the many things Gary got raked over the coals for!

I know he was trying to set down some guidelines for folks -- this was all very new to everyone, and he and others were trying to explain things, sometimes badly. In RQ, there was a whole thing about "Your Glorantha Will Vary" after being "Gregged (Greg Stafford) with "canon."
There's lots of different playstyles out there, and everyone needs to find their own spot. I'm wondering if the OSR people are wanting to bring "deadly" back with some of the complaints that 5e is too easy on PCs. That's certainly a playstyle, and I get it -- feeling like things are actually dangerous adds a lot of intensity (various opinions on "fun") to the game, but it's not for everyone.
In any case, I love getting lots of different takes from various quarters (even crazy ones), but at the end of the day, take what's useful and leave the rest behind.