>>150956243
I think it's meant to be an unreliable narrator thing. Ladderbot 5000 was able to make out the holograms because he was being intentionally perceptive after all the creepy stuff started going on. The other drones aren't as hyper-aware when they come to investigate, so the hologram effect isn't noticed. Same with Uzi, except she's also in a fight during all of that. Pic semi-related.
That's me doing the writers' work for them, though. It's more fun to say Liam is a hack again.