Implying culture as we have it may be a stretch too big for other species. Who may form single integral units like a zerg swarm. Yeah, it is a game fiction, but you got the idea. Why do cells split and grow with no complaints about their life? Because it is the way they are, and if they were not, they simply didn’t. What is their strategic goal? A counterargument to this is that swarm may be not intelligent enough to make it, but my point is that our lifeform’s culture is not the only one possible, and the culture as we have it may be not a requirement. (Not that it is any sort of beauty anyway. Apart from particular individuals, it is mostly disgusting and ineffective.)

Also, a neighbor idea of the scientific progression in thousand years from now on doesn’t account for an artificial biology progression, like the same humans in 1k years would do unimaginable things. Would they be still individual humans? Personally I don’t think it is more than juvenile civilization’s tunnel vision illusions.