"The argument that a snake being knocking prone is UNreasonable has been soundly, objectively defeated" only if you accept the evidence given.
Well, of course, but when that evidence is real world snake behavior, it would be foolish not to.
And, if you accepted the conclusion before the evidence......Well. Of course you conclude that it is soundly, objectively defeated.
While that is not what I am saying, most of the time, at the table that is exactly what would happen. I don't spend playtime worrying about how much "sense" it makes to apply this condition to this monster. If it doesn't have an immunity, that is what happens because those are the rules we're using and its just a combat, which is not the focus of the game.
I don't expect a "gamer utopia", but neither do I believe that GMing is "a big, largely thankless, job and bears most of the burden for making a good game that is engaging to 3-5+ completely different personalities". I have certainly been thanked. I've been thanked a lot over the years. I've had former players from over 20 years ago look me up through the Internet to thank me....to tell me that they are continuing campaign milieus I created.....and to ask me for advice.
Who else bears the bulk of the responsibility for making a fun game? Player 3? I explicitly stated the players bear some, but the burden falls on the DM. It's not a big job? Or are you solely objecting to the largely thankless part? I said largely, not entirely.
I run games I enjoy running. I run games that I would enjoy playing in.
FWIW, I think my system works fine. I run the best game I can, and that requires running a game I enjoy, in a manner that I enjoy, with people whose company I enjoy, and who also enjoy the game as it is run. There is no shortage of such people, so it's winning all around IME.
But do you tailor your game to the particular players at the table or do you run a game where the player in seat #1 is irrelevant. It could Bob or it could be number 3 on the waiting list?
I don't do that. I tailor my games to the players I have. One of my players is a powergamer, he loves being awesome. He is happy when he gets to do cool things. I make sure he has the opportunity to do that (big fan of pg. 42, that one, though I don't think he knows about pg. 42, I've certainly never told him). Another is a casual player who enjoys getting into the game, but you have to directly coax him into the game. I've gotten quite good at doing that in stark contrast to the other fella who DMs for our group, who has not. Another player really wants the characters quirks, and his characters are always quirky, to really play up in the game. When I make sure they do, he is quite rewarded.
I'm not saying you don't do this, but it's not in your list. My players like indulging their favorite things. If you run a game where the game play doesn't change based on the players involved, they would be less happy in your game than they are in mine. Maybe it's just a personality quirk of mine that I place my players fun above my own. It would be more accurate, though, to say, I find my fun in theirs.