At a certain point you run into trolley car philosophical moral dilemmas though. I'm not saying Gygax was right (I disagree with a lot of his ideas and I don't think I would have ever wanted him as a DM), but it is just a game where impossible things may be possible. Things that have no relationship to the real world.I believe I found it.
This is the inciting question, with his first response immediately after. Here is his first follow-up I think is actually relevant, and contains the first reference to the offensive idiom, with the next 8 to 10 or so posts following that up with more detailed answers.
If that's what you're referencing, I entirely disagree with your reading. I think Gary is very explicitly talking about the alignment system in the game and what a paladin would believe would be Lawful Good. It reads very much as, "this is how I would run the scenario," and not remotely like, "this is how the real world works." I have great difficulty taking what is said there and and calling it Gygax's personal philosophy and not just how the game is set up.
There are plenty of other examples that show Gary as clearly a man of his own generation at best, but I just don't see it here unless you're reaching for that conclusion from the start. Even then, I don't really think it's all that useful to take everything we don't like about the game and sweep it under the rug of, "Gary Gygax wasn't a very progressive individual." It feels like trying to exonerate it. I'd rather just take the game as it is or was, with blame falling on players who missed the problems as much as on any misguidance of the creators. That's kind of what that platitude about "it was wrong then as it is wrong now" means when you take it to heart.
I don't think there is any real answer. It's like the question of going back in time to kill baby Hitler*. If you know that X is wrong but if you do not do X, then greater evil Y or Z is absolutely guaranteed happen, there is no good answer. Of course you can always change the game, say that Y or Z is not absolutely guaranteed but then you're changing the rules. You've decided to add a 3rd track for that trolley to travel down.
If you want to add that 3rd track for the trolley car problem so that there's a "better" option, that's fine. Personally I just never put the trolley car problem in my games because this is a philosophical debate that never, ever, ends. Unless, of course, there's a 3rd option like taking a great risk and derailing the trolley car with the PCs on board.
*The real answer to the baby Hitler dilemma to me is that if you can time travel just go back 10 months before Hitler was born and slip his mom some long term birth control.
