Luke Bouma writing for Cord Cutters News:
Amazon is adding full-screen video ads that will play when you start your Fire TV unless you quickly perform an action on it.
This new update will be rolling out to all Fire TVs made in 2016 or newer. With this update, the ad at the top of your Fire TV will now start playing full-screen, often promoting a movie or TV show. By hitting the home button, you can quickly exit the ad or if you quickly perform an action on the Fire TV once it finishes, you will avoid the video ad, but you only have a few seconds.
I have several Amazon Echo Shows. I turn off promoted content but Amazon keeps adding it back. I am considering whether I should stop using Amazon devices.
See also, Michael Tsai’s Blog.