Since 2018 Amazon has upheld a program that paid employees to post positive comments on social media about the company including working conditions. Their program called the Amazon fulfillment ambassador program was discontinued in December. Experts say that while the program was not particularly unethical or illegal it appeared inauthentic. One expert claimed, “Amazon discontinued the program because of the optics not because of its efficacy or morality.”
See "Amazon ends their fulfillment center ambassador program", Peter Suciu, Forbes, February 4, 2022