Obviously not who you’re talk responding to, but the extremely short version is: writing what ports devices have to use into law is extremely likely to freeze innovation.
No one is going to spend the money to develop a new port that can’t be used in Europe, so a new port never arises.
Given the EU previously wanted to mandate Micro-USB, in part because they said it was unlikely a better port would come out, many people think it’s incredibly shortsighted to assume usb-c couldn’t get better or smaller. And now it won’t.