They can use it to do a lot of things. AI is far from perfect and makes all sorts of weird mistakes, but so do people. Arguably there's substantially more value in training inexperienced humans to get better in their fields than in settling for AI as a cheap alternative that starts with a maybe slightly higher or similar but cheaper baseline, but that doesn't eliminate all value they create. You can make arguments about the long term benefits socially or for individual organizations that leverage AI, but spend a couple hours playing with Claude and it becomes extremely evident that they're not anything resembling useless.
Even if we completely throw chat bots out the window, there are some instances of general utility for thinking models. This comic is making a moral argument that's more compelling, but arguing that they're actually totally useless doesn't really reflect reality