Two completely different things. Empower has added the use of the Enter key to launch a link and SmartView has not. The post you linked to is about SmartView.

The post you quoted is about a different behavior in Empower. When you scroll to a link in Empower and click the wheel (I can't comment on using an 8100, 88x0, or 8300) the link launches (either the browser or an email)-just like clicking Enter-instead of opening the menu. This means that if you wish to access the menu you need to make sure a link isn't highlighted.