Your TV's USB port, while convenient, is not a significant selling point. Most individuals purchase a TV for its primary function - watching content. However, it's worth noting that modern TVs come equipped with a variety of ports, including HDMI, USB, and Ethernet, which can be utilized in different situations.
The usefulness of these ports varies. For instance, the Ethernet port may not be particularly useful if the TV is far from the modem. The USB ports, on the other hand, can be useful, such as when using a Roku Streaming Stick, which can be powered directly from the TV's USB port in newer models.
Most people buy a TV to watch things, but you might not realize it's capable of a lot more than that.
Author's summary: The USB port on your smart TV has limited uses.