Probably. One of the main selling points of a smart TV is that it can stream content through its internet connection as an alternative to using multiple devices. It might cut down on the number of cables you need, but it probably won’t eliminate your Blu-ray player or gaming systems, which all connect through HDMI cables. When you’re shopping, either buy a TV with the number of HDMI inputs you think you’ll need, or get a switcher that’s compatible with your new TV.