I agree, but we see it way too often. Watch any tournament as a player is putting and see how many cardmates turn their backs to the player. Yet....801.02,A Enforcement says (bolded by me for emphasis)
If you aren't watching, or you turn your back on the thrower, you aren't "...ensuring play in accordance with the rules." Some people will argue you can't always watch a player. But why not? You are supposed to wait your turn and your turn doesn't begin until you arrive at and determine your lie. So you CAN watch a player in the woods, etc. and ensure the rules are being met, and then go to your lie. You CAN watch a player putting, ensure the rules are being met, and then go to your lie.
For the cardmates who told Paige they didn't see it.....were they not watching? Or did they not see a penalty? Two different things, but I'd bet it was the first....not watching.
This is an issue I have with the pros....they don't follow/enforce the rules. And then amateurs, casual players see what the pros do and copy them. I played in a tournament and had a cardmate say he didn't need to use a marker...the pros don't. I had to tell him that the pros DO use a mini marker, it's just not always visible on camera and sometimes the camera isn't on them when they place their marker. He wasn't happy with me....but he used a marker after that.