I'm not confusing anything.
This is what OP was asking:
Are there any TVs and soundbars out there that can integrate with Home Assistant, and don’t need a cloud connection at all?
I answered accordingly. There really isn't a reason for a soundbar or surround sound system to be connected to any sort of network. Streaming music is the only reason I can think of, but that can be handled by bluetooth (which many sound systems have), or even an AUX IN with a dock or bluetooth adapter.