After the Light God King used his powerful strength to forcibly conquer that world, with just a bit more energy, he successfully achieved his goal. In the end, after erasing the minds of those angels, they completely became tools in his hands. Ultimately, in the subsequent wars, the presence of angels indeed contributed immensely to the Light God King's expansion.
However, although the actions of the Light God King were definitely correct and effective for him at that time, it's obvious the Angels as the enslaved party would surely be unwilling to become the tools of the enemy.
Thus, even though 99% of angels were made into biological weapons by the Light God King, the Light God King never regarded them as threats. Once things were on the right track, he didn't pay much attention to that world anymore.
