Why doesn't the "Go to the folder" dialog in Finder not allow paste?

When opening a file in almost any given application, it is very useful to me to be able to quickly navigate to a path that I have copied from elsewhere and is now in my clipboard.

My understanding is that the quickest way to do so is to press ⌘+shift+G

The problem is that the dialog that appears doesn't allow the select all function ⌘+A nor paste ⌘+V so it takes more time to paste as I'm forced to use the mouse rather than key shortcuts.

Is there a way to modify this behaviour, or even a better workflow to achieve the same goal?