Sorry, but I think you're wrong on your concern: in China they specifically fix this issue with buffer batteries. From grid perspective, charging is no different than with regular, slow charging stations. You can still limit their capacity (as in cars that can be charged per 24h), the difference here is you can charge quickly.
This is a good compromise for the time being while the grid catches up with demand.
This is a good compromise for the time being while the grid catches up with demand.