But if it's law to use the standard connector than how do you use a different (lets say newer) connection if the law says to use the standard connector.
There's a bit of a chicken and egg problem. Somebody is going to have to build a device with a connector that isn't standard at some point to make progress.
It only means that device makers will have to agree on a new standard before they can drop the previous one. I agree that it will slow down things, but there is no chicken and egg problem.
And what if they can't agree? Maybe apple make a device so thin that even USB-C won't fit and other manufacturers explicitly decide to hobble them by not supporting a thinner connector.
This law would be great for anti-competitive practices. Lowest common denominator wins by default.
There's a bit of a chicken and egg problem. Somebody is going to have to build a device with a connector that isn't standard at some point to make progress.