No, it's not wrong. Their OS objectively does not provide firmware updates and they've blocked updating SoC firmware. The section you've linked acknowledges that they're blocking updating firmware for the SoC. It states they are not going out of the way to block it for external components due to lack of clarity, but their OS is still not providing it. Outside of the SoC, some of their components are end-of-life without updates available and others are not. Some are set up so that they can receive updates and others aren't. Crucially, there aren't cellular radio firmware updates.