In wikitekst, you can create a ahortcut like [[Groningen (provincie)|]] that will then create a linktext without the brackets. This also works for users, but different, so [[User:Akoopal|]] creates a linktext with Akoopal.
However, I discovered these two will be combined as well, see the following test: https://nl.wikipedia.org/w/index.php?title=Gebruiker:Akoopal/Kladblok&diff=56862981&oldid=55272598
I created that link with [[Gebruiker:Mar(c)|]] (Gebruiker is User in Dutch). I don't think this is wanted, and if an internal link is to the user space, it shouldn't strip the brackets anymore, at least I can't think of a reason where this is wante.d