As the Hex Army and subsequently the Golden Skull Alliance finally put their melee mech units into play, the Sundered Phalanx did not remain still.
The Gaugers sent forth their own melee mech units in order to stop the enemy from charging too close to whatever was left of the Kosic Ring.
Though a lot of orbital space stations had already lost their titan shields and most of their turrets, the enormous metal constructs were still intact mostly.
It was not profitable for the attacking to continue to break down these huge fortifications. It took way too many concentrated volleys to blast the sturdy space stations to pieces.
Hence, even if the space stations had lost almost all functionality, their physical mass still provided the Sundered Phalanx with a considerable amount of hard cover where friendly ranged mechs could shelter behind.