I think it's a bit too pretentious of us as a species to speculate about the motives and capabilities of alien civilizations who may be billions of years ahead

I think it's a bit too pretentious of us as a species to speculate about the motives and capabilities of alien civilizations who may be billions of years ahead of us. We haven't figured out dolphins, FFS! I wouldn't be surprised if in 100 years we look back at all this the same way we now think about the theory of an infinite number of turtles supporting the Earth. It's all just cutely naive speculation.