The lightning tribulation did not remain tame forever.
The alien starships of the 7th round became increasingly larger and more formidable. Their defenses became tougher to crack and their weapons started to hit increasingly harder as their distinctive Messier 87-style materials and technological applications became increasingly more advanced.
Although the warships originating from a high-energy environment never came close to matching the sheer sophistication of humanity's high technologies, the aliens who labored hard to develop their impressive vessels possessed their competences.
Their native blend of hyper technology and E-technology blew anything developed by red humanity out of the water. They were so many generations ahead that it would probably take thousands if not millions of years for the Red Two to catch up on an independent basis.