EV acceleration is directly proportional to how much current you can pull out of the battery pack, which is directly proportional to the number of battery cells, which is directly proportional to overall range... On paper, yes those numbers are feasible.
They're a little wrong, mostly by conflating current (amps) and power (watts) because of standardized cells, all with the same voltage.
This post is worse. It's easy to get any voltage you want out of a big battery pack. And it's pretty easy to convert between voltages. The hard part is sustaining whatever max voltage your motor can accept, which is a matter of power. If your motor is big enough, and your electronics are at least competent, the limiting factor is the power your battery can supply.
Edit: Like, a Model S battery supplies about 330 volts and rearranging the battery cells in a simple way would make it supply 4000 volts at lower current. You could replace the coils in the motors to accept that newer voltage and get very similar performance but with significantly higher chance of electric shock.
Sorry then. My experience is with ebikes where more voltage gives you more torque. More amps - more top speed. But maybe the dash reports it differently and from POV of a controller.
If anything, it's the opposite; for a given motor winding, more voltage will increase the top speed, and high-load draws more current. That's why electric motors can burn out if you stall them.
The reality is more complicated when you can vary the motor design, Kv, etc.
For constant resistance, voltage is proportional to current so "acceleration is directly proportional to how much current you can pull" is equivalent to "acceleration is directly proportional to how much voltage you can pull". I don't think it's particularly helpful to bluntly tell someone they're wrong like this.
