It's true. Basic Li-Ion battery science: avoid deep discharges, avoid extended duration at extreme charges, avoid high temp, yadda yadda yadda. It's not black and white though - like saying you shouldn't rev your motor above 75% of redline - you use it as you need. People do the same to laptops and phones.
On the other hand, the range discussion is mostly caricature. For day to day usage, number of times people cover 200mi+ (or drain 70% of their tank) in a single day? near zero. For road trips, I've done many multi-state, multi-country drives, and the number of times I've done 600mi/10hr legs without a single stop (as is claimed here)? Absolutely zero. I don't do 10hr business class flights without multiple bathrooms breaks and stretching my legs. If you can do that - power to ya.
After 20,000 miles, the number of times I've charged in public outside of a roadtrip: twice. once was first day ownership out of curiosity.
no planning required. get in the car, put in your destination, and if you need to charge en route, the computer tells you when and where.
imagine signaling your personal purchasing decisions based on what other people do....