The problem is all those chargers have to be linked, not just CT on the house supply, but back to the local substation to monitor the overall loads on the cable(s). Remember the typical past assumption for house load diversity when sizing the substation and cables is around 3-5kW, not 14kW or more.
So in that sense technology can reduce the risk dramatically, but people have to get used to the idea that their "1 hour" charger might take several hours or even overnight when lots of others are trying to use the supply for EV charge, cooking, showers, etc.