GoKawiilRoku explains accidental screen reader activation via remote's Options button
Roku TVs can begin narrating on-screen content when a remote's Options (star) button is pressed four times in quick succession, a shortcut meant to enable a screen reader for accessibility. This can happen unintentionally, such as when a remote is jostled in couch cushions or stepped on by a pet. Pressing Options four times again turns it off, or users can disable it manually through the Settings and Accessibility menu.