No where in your OP does it state anything about held Splinterland assets being part of your equation. You are free to bring that point up now and you just did but I can't factor it into my response before the point is made. I would agree that such people could fall under the extractors definition dependent on where that traded away value went. I haven't checked the account you shared above but I'll take your word for it. But just as you found someone who might highlight the displayed system in your OP works there are others that (as I see it) get unfairly categorized (A) those who shift value on the chain vs. (B) those who remove value from the chain. I know you are likely a busy person so thank you for taking the time to respond. There isn't much else I can add here so I will have to bow out of the conversation.

The equation in your OP:

If I divide Author Rewards + Curation Rewards by Held HP, people who held more HP than they earn will have a fraction less than 1.0. Those who held less HP will have a fraction higher than 1.0. This is the Krampus Co-efficient! Or KE.

KE = (Author Rewards + Curation Rewards)/Held HP

KE = 1.0, you hold exactly as you earn (approximately!)
KE > 1.0, you hold less than you earn
KE < 1.0, you hold more than you earn