Nobody is saying that you don't need charging stations etc. But even with over 50% electric sales it takes many years for most cars on the road to be electric. (here it's some 12% atm).

This gives the time to build infrastructure to cope. If the buildup is too slow, electric car sales slow down (for the benefit of hybrids) and then increase again.

The idea shared by some people (mostly from countries with no electric cars around) that "suddenly" everyone will realize that electric cars are wrong and go back to petrol-only is like believing in Santa.