$33k in a year in a half depreciation is hard to swallow. Not exactly like a cellphone wear and tear/depreciation. I still do love Tesla's. I had a 2015 MS P85D and my wife has a 2021 MYLR.
It is very hard to swallow, that is for sure, but not abnormal for luxury/high end vehicles. The depreciation isn't exactly like a cellphone, but more similar to technology rather than a typical auto manufacturer.
Here is my logic:
When Chevy or Toyota comes out with a new model for a truck, let's just say the Tacoma, everyone knows it is coming for a while, probably a year or two! In that time, the price and deals for the old version will come down a bit, people have time to sell/buy, depreciation will occur fairly slowly. Also, the differences between model changes is really small. Maybe some trim changes, button locations, but the technology doesn't change much. We have all bought old-school ICE cars/trucks, I am sure we are all aware of the process and how it works. No one really knows what a brand wants for their cars. Incentives come and go, but nothing like a permanent change, like with Tesla. That is a good/bad aspect to the pricing model Tesla uses. Personally, I like it, but it can bite people in the rear.
Technology on the other hand is different. Let's say you buy the iPhone 6. A good phone, you got it when it was new, paid $500 for it. That phone will stay at that value, and you can probably sell it for ~20% less without an issue until one of two things happens. If Apple decides to drop the price by $100, you will now be able to sell yours for ~20% less than the new sticker price, no matter what you paid! And the tech gods may laugh at you... Apple may drop the price by $100, and then the next day announce the iPhone 7. This could all happen erratically and a month or two after you get the phone. That phone you paid $500 for may be worth $100 or less months after you bought it due to poor timing and a release of new tech.
Because of the pricing model and the drastic tech changes, Tesla tends to mimic the technology depreciation model more IMHO. Sadly, that depreciation tends to be a % not a $ amount, so the more expensive the tech, the more depreciation $$ the buyer eats.