I sympathize.
That said, I did recently benefit (cost-wise) from purchasing a used Tesla with high mileage, so I do have some personal experience in this matter.
OP car : Model S Res. #13,967, non-perf, 85KWh, Pearl White, Black Leather, Piano Black, 19", Pano, Tech, Air, twin chargers
Trade in : $37K for car that retailed $82K.
Tesla formula for inventory cars is $1 per mile and $1000/month.
28 months = reduce by $28K
56000 miles = $$$$$
Ok, so that won't work, now compare to CPO:
Tesla CPO Consolidator
P03368 sold for $55K with only 29K miles. That's almost half the miles of your car.
Tesla spends thousands refurbishing CPO cars with high mileage, I should know, my CPO had high mileage, they replaced the brakes, tires and UMC for starters!
Tesla are offering you what they need in order to bring your car to "as new" state for CPO sale. You don't have to take the trade in, but at least know that IMHO it is fair and reasonable for a car already out of warranty that will need to be resold with the 4 year CPO warranty with the new owner expectation of nearly new condition.
Here is a quote from you elsewhere on the forum:
I am driving 25,000 miles per year and in March of next year when I expect to have my Model X I will have driven 75,000 miles. Sixty nine percent of the miles (69%) have been on trips and comparing it to my previous two Lexus vehicles getting 25 mpg I am saving about $3,300/year on gas or about 10k for the three year period.
Of course I didn't buy the Tesla to save gas but it is a nice side benefit.
Fuel savings is a benefit of driving an EV, however, it should be clear that depreciation scales with miles on a car, any car, Tesla or other.