Cause they are a tag team and TNA and ROH actually have teams to showcase. Granted, they are not one of the main ones but the main eventers need jobber tag teams. Just think of them as the Techno Team 2000 or High Voltage or 2011. I don't see a problem with it.
Meh , I personally would rather have other guys being given tv time. They're pretty meh to be honest nothing spectacular about them but they can fill in as an extra tag team which adds another to the division.