The destruction of the Hive Fleet Terminus caused a massive commotion within the Milky Way Galaxy. In Erich's past life, the Galaxy was practically lit aflame with the news that the Germanic Star-Empire had managed to defeat a Naraku Hive Fleet practically on their own.
But in this timeline, it was so much worse. After all, the Hive Fleet was decimated before it could even descend on the first Dvrakian World. Any recordings of the event showed a flash of light appearing out of thin air that destroyed the Queenship.
The aftermath was a simple and expected turn of events. Without access to the hive mind, the Naraku Hive Fleet turned on itself, and during the ensuing chaos, the GSE and its allies swept in and mopped up the survivors.