Sort of. ICE engines are much more mature, and the improvements happen in much smaller increments. There were plenty of ICE cars 30 years that could get 30 mpg, just like there are today. Whereas with EVs, we’re talking about potentially extending range and charging speeds by 50% or more.
EVs are older, sure, but they were in suspended animation for a long time.
As to the question of how mature is mature enough, that depends. In my case, as an EV owner, I think they are mature enough now. However, the fact that major developments in range, efficiency, charging speed, etc are happening regularly in the EV space reflects a certain immaturity. The technology clearly has not yet stabilized, and that may be concerning for people coming from an ICE background.