It's not borken, it's working as intended.  Honestly the tech would be extremely overpowered in neutral colonized game setting otherwise.  it's supposed to give the TEC rebels and edge equalt o the time it would normally take to kill off basic militia defenders- not the tiem it would take to defeat militia ships, kill any orbital structures, AND bombard down a planet.   Frankly TAR would be too large of an advantage in that game setting otherwise.

Not to mention thematically ti wouldn't fit either.  You don't orbitally bombard the planets of allies.  Honestly I think the idea with TAR is the militia defending planets are part of an extremely disorganized local populace in normal games which welcomes the guiding rule of their allies.  by contrast Neutral Colonies are much more well established and organize- they are happy to be oyur ally, but would prefer to keep their independence.