Charging is an issue. However, I don't personally know any plug-in hybrid that is actually plugged in at night. They still get the government subsidies, and they can plug in at certain mall parking lots or appropriately equipped parking garages, but I think they're mostly driven as normal vehicles. That use brake pads and low-RPM gearing less than normal vehicles.
Also, unless GP lives in an area where those sorts of garages are available, at least in the near term, they won't have anywhere to charge, which seems a fair argument against purchase. For instance, I live in south-eastern Wisconsin, and while there are charging stations within driving distance, there aren't any that would be convenient on my way to or from work, and I couldn't simply leave it at one and walk to work (or bus, because we don't do public transit here).
Known costs are known, less of a risk. It's easy enough to buy a new EV car if the other factors here are resolved, but I don't think it's unfair to say too many issues are up in the air at this point.