What is a good voice control TV device for a blind man?

Episode 1503 (1:56:30)

Gary from Weeki Wachee, FL
Amazon Fire TV Cube

Gary's mom has dementia and his brother is blind. Their cable company has gone all digital and now they have to make the transition and need voice command to change the TV channels. Leo says that the Amazon Fire TV Cube is a great solution, because it has Amazon Echo built it. It can control some cable boxes, and most TVs. It costs $119. It will also work with Google Home Assistant.

The Logitech Harmony Hub, paired to the Echo will also work and probably supports a larger array of devices. But the Cube is all-in-one. He'll just need to know if it can control their cable box.