1) Chargers are spaced every ~170 miles or so. How often do you think people are driving even ~200 miles w/o charging let alone ~300. <1% of my miles are in excess of 200 miles w/o charging and it would easily be 1/10th that >300 miles if I had a car with 400 miles of range.
2) The point is that a linear increase in range results in an exponential increase in road damage. Why carry weight that's ~never useful?
We need more fast chargers. 110% agree. We need battery chemistries that can charge fast to a higher SOC without tapering at 50%. 110% agree. We get that and range over ~300 miles just means more road wear for ~no benefit.
IMO, the issue of huge capacity batteries is something of a marketing ploy at the moment, capitalising on a not totally unfounded concern over lack of available charging and adverse conditions effecting range.
The medium to long term objective shouldn't be to make every heavier cars but rather to make lighter, less resource-hungry designs perform ever better.
But it will take time for infrastructure and owner confidence to find a balance.