I'm probably not the only one that hates this icon, it looks like the act of opening in a new tab, when it actually redirects to the URL in the same tab. Some of my suggestions are:
Browsing6853 it looks like the act of opening in a new tab
No, it informs that this link is external. It's a standard for years.
Where does this icon show up?
Lateral wikipedia board:
In the lateral wikipedia board, note that when you click on the blue links without the redirect icon , the widget just updates with it's information instead of making any redirection.