The Kessler syndrome is mentioned, satellites colliding, causing a cascade of follow-up collisions. This gets brought up a lot, but people have a poor intuition on how large the orbit space is. Think of it this way: It's obviously larger that Earth's surface, and placing, say, a million objects on Earth still leaves a lot of space between them (there are thousands as many humans). Yes, satellites move in certain orbits, not in random places, but space is large, and humans are bad with imagining large numbers and things. The illustrations with fat dots on tiny earth images are misleading too IMO.

Apart of that, I do agree that space data centers are probably just a marketing stunt at this point, although some things could obviously be done to increase their chances, like more lightweight designs on GPUs, something that was never a big topic before.