What else could it be? Almost all these "clever" new "AI" products are just people taking a particular "trick" for interacting with GPT and obscuring it behind a slick interface. Hilariously, AI Dungeon was probably the most impressive, but even that could be entirely recreated by just interacting with GPT in the raw if you knew the right tricks. The interface just made it more convenient and "magic" feeling because you didn't see the moving parts.

None of the "products" that came after have been as impressive, including copilot. Using GPT as a font for new writing ideas is probably the only "practical" thing it's good for, at least until the tech advances significantly, but charging for a service like this that essentially adds 0 value is pure rent-seeking.