Your TV's USB port is a nice feature, but it's not a major selling point. Most people purchase a TV for watching content, but it's capable of more.
Modern TVs come with various ports, including HDMI, USB, and Ethernet. The usefulness of these ports depends on the situation. For example, the Ethernet port may not be useful if the TV is far from the modem.
The USB port can be useful, but its functionality is limited. For instance, it can be used to power a Roku Streaming Stick, eliminating the need for an external power source.
With the newest model, you can get power directly from the TV's USB port instead of having to be plugged into an external source.
However, even this feature has limitations, making the USB port not as significant as it seems.
Author's summary: The TV's USB port is overrated and has limited use.