Isn't every plug-in hybrid an EV with a built-in range extender? I guess you don't like their performance specs, but there seems to be a sweet spot in the solu

Isn't every plug-in hybrid an EV with a built-in range extender? I guess you don't like their performance specs, but there seems to be a sweet spot in the solution space that all the manufacturers are focused on. I wonder, is this due to technical limits and/or regulatory challenges, or mostly just consumer preference?