It will have an impact but it will be slight. Any difference is dwarfed by regular old depreciation.
That's not a good comparison. If a new car is relatively more expensive than a used car will also have an upward pressure on value.
You're assuming 100% price elasticity for those new cars, which is wrong.
There's only a finite number of people who would spend a non-trivial pile of money on what is essentially a likable yet pretty crummy car, only because it's electric. The introduction of the mid-range model should indicate that, at least in the US, the market is reaching saturation for the current price point.