I don't believe it's the same. What about charging multiple cars at 1MW though?

Under the assumption that electric cars will drive the same amount and the efficiency is the same and any car charges at a random time and there is a big enough numbers of car, then charging faster will not increase the load on the net. In reality this will drastically decrease the number of charging station needed, as they will be freed faster.

I'm not sure why this is downvoted - this is actually a valid point. If your average charging station handles 24 cars an hour, it does not matter from a power consumption perspective if it does so by having 12 chargers and everyone waiting half an hour or 2 charges with everyone waiting 5 minutes (but the UX will be drastically improved).

The only effect will probably be increased EV adoption, but that's something we generally want and need to prepare for anyway.