If I was being harsh I’d say nothing has really changed. You got the car you were happy to pay for when you ordered it.
Tesla seems to change things constantly one way or the other, on a fairly regular basis. Dimming wing mirrors came with the 2019 car, disappeared with the 2020 one, and came back again with the Q3 2020 car. I ever recall the white interior disappearing and then being reinstated within a few days after someone tweeted Elon asking for it (I’m not even joking). Silver wheels on the Performance vanished overnight and never came back. An entire model of Model 3 - the M3P- (a sleeper Performance) existed and then ceased to be.
I had said elsewhere on here that the heated steering wheel was reportedly delayed until December, and didn’t make the cut for the refresh, and that turned out to be correct. It’s even possible it’s still not being supplied, even today, as the UK Tesla website doesn’t explicitly mention it in the interior spec, and the China one does. At least one 2021 owners on here has said that they’ve got the “no seam” steering wheel, but no heating.
The only thing you’ve lost, maybe, is a tiny bit of depreciation, but since that’s front loaded anyway on any new car it’s probably negligible, if it exists at all. Plenty of people will prefer the old door cards, I know I do. If you are really worried I’m sure they will be a drop in replacement, if you want to retrofit them.
Hope you get better soon, you’ve still got a great car