I just watched this video, and the first thing I thought is that this must be about a year old. I was right on target because the industry changed in the past year. The number of supercharger locations increased by a third since then. The big mistake he makes that some here also make is assuming that we need as many chargers as gas stations, this is simply not true. Most people won't need to use a public charger very often. The comparison that most people live 4 miles from a gas station and 31 miles from a charger is irrelevant, you don't need a public charger near your house.
He also discusses the (former) dead spot between TX and CO, while that could affect someone who may drive that route, it makes no difference to most of the country who doesn't plan on ever driving there. I know that there aren't any dead spots for hundreds of miles all around where I live, it really makes no difference to me how many chargers there are or aren't in Montana. While I'm sure it affects some potential buyers, it is irrelevant to the overwhelming majority who can charge at home and get to anywhere they can imagine driving in the next 5 years without getting stuck in a dead spot.
The long term solution will most likely include supercapaciters, which can basically charge instantly, but that's not even ready for prototypes yet.