So I would think that if the dominant "form of life" in the universe were robots, it seems like a reasonable guess that they'd have learned to self-replicate. If they're really so smart and able to dominate the universe, one might suppose that they would accomplish this through master of nanoscale engineering, creating robots that are able to grow copies of itself. It'd seem likely that such a process would include having a machine made up of organic molecules, able to take in and absorb matter, both for the material and for energy.
Little by little, imagining the scenario based on what we know of science, it becomes increasingly likely that these "robots" would be life pretty much as we know it. Maybe not quite the chemical bonds that we're used to, and maybe not in the shape of things that we're used to, but something that eats "food", excretes waste, is made of chemicals comparable to proteins, DNA, and whatever else. Able to "get pregnant" and "have children". Perhaps as different from us as we are from exotic deep-sea fish, perhaps even more different, but still recognizably "life".
So I guess what I'm wondering is, what do we mean if we say that the dominant life form In the cosmos are "robots"? I we imagining something with microchips, circuit boards, and metallic gears? I could think that super-intelligent machines would be less crude.