This is really easy to answer, with some perspective from the inside, but mostly from public information:

- Amazon has 3 main business lines ("orgs"): Ecommerce, AWS and devices.

- Ecommerce and AWS are (now) cash cows. Devices bleeds money. TV falls into the devices organization.

- Devices was a Bezos bet. Current Amazon couldn't care less honestly.

- The devices organization is (today, after layoffs and people leaving in droves) essentially full of incompetent people, where all the leftovers of the other two orgs end up.

- It's people that was hired to build structure with the sole purpose of some higher-up promotion. They never served any other purpose, neither they have any particularly sophisticated skill.

- That's the people that makes the TV app.