This must be addressed by Roku ASAP. It must be give the option to disable.
How to disable because you watched
GET B/C YOU WATCHED OFF ROKU
Thanks for reaching out here in the Roku Community!
Would you mind giving us more details about this particular issue? What channel are you on when you see the "Because you watched" feature?
With more information, we will be able to assist you further.
Best regards,
John