My data point: old Kona Electric vs new Ioniq 6. Acceleration is faster, but not twice as fast. It does charge 40-50% faster though, and that is life-changing. Not twice the range but 360 mi vs 220 mi is a huge improvement. More than twice as comfortable, and that’s switching from the top of the line to the base model. Mostly due to better climate controls and a huge amount of legroom. Both have 5 star Euro NCAP scores. But now the lane keep assist now works at any speed and there are more warnings about cars and other obstacles, so there’s a safety improvement. And it’s not twice the price: the MSRP was cheaper!

The value isn't there to justify double the price, but yes a new EV is gooder than an older EV in every single category.

The new Model Y surely is safer, more comfortable and has a longer range and a better battery.