There are four ways social media could prevent disinformation: #1. Vectorize images into a database and then search that database for matches whenever a new image is uploaded. Publish the date and context in which that image first appeared. #2. Inspect images for copyright. Deny the posting if an image was not purchased or offer the opportunity to purchase the image. #3. Truth score - Track the number of times a poster has been moderated. #4. Cool down - Restrict the number of times a user can post or share content.
Free speech is important. This plan could be implemented with just a few sprints worth of programming work and still ensure that people have a voice.
