Solar in some cases can actually address the [over exaggerated] concerns regarding EV charging. By bringing power generation closer to where the power is being used, there can be less load on the long distance transmission lines. In some cases it can also reduce the load on local transformers.
But all of that is mostly irrelevant, the transition to EVs will happen over the next 30 years. Even if we weren’t looking to move to EVs if we ignored the current grid we would be in trouble. But like anything we’ll upgrade parts slowly as needed.