No? Accelerating and decelerating are both lossy, and for the brief intervals when you're going faster you're also taking additional wind friction loss.

Most EVs (including Tesla) do have regenerative braking, so some of your energy is converted back into electricity when you brake, but nowhere close to all of it, so people who have a smoother, less aggressive profile will get more range.

Also if you brake really aggressively, you're dissipating more energy than can be successfully harvested and the rest is converted to heat, losing the energy you paid for and also increasing maintenance costs.