This 100%, we're not done with batteries yet as a society and it's probably one of the most heavily funded industries because the opportunity to strike "gold" with good battery tech is too large to ignore.

Lithium wont be used forever and and downsides to batteries will slowly be eroded until we wonder why we ever used petrol in the first place.

As far as the grid goes, in my eyes rooftop solar is going to provide a huge amount of the power generation required for EVs. We're not there yet but the price of solar keeps dropping rapidly and you'll see a shift in messaging from "discounts and charge overnight when demand is low" to "discounts and charge during the day because generation is high".