That's all well and good, but you specifically said that Nissan has "let everyone catch up". I don't see that. Rather, I see a disgruntled owner who is frustrated that Nissan hasn't done more. Nissan has improved their batteries from 2011/2012. Quite a bit. The 2018 Leaf just represents the next step in that evolution.
Frankly, I understand both sides of this. As a consumer, I want a longer range car with a more durable battery that can QC at 100+kW. And I want it all for an affordable price.
On Nissan's side, they want their EV business to be a Going Concern. That means that above all it must be profitable. Too many changes too quickly, and there is never any time to recoup the significant investment they have made in the industry.