Why is there so much misinformation about Covid vaccines and vaccines in general? Because people want to believe in such misinformation and because that allows websites to make money from their readership. Therefore the peddling of misinformation continues.
It is not so different from what publications like National Inquirer and Weekly World News have been doing for a long time. But instead of paying for National Inquirer you can now get such misinformation for free on the web, because you are paying for that by spending your time seeing the advertisements. Information wants to be "free" whatever that means, but people want misinformation, to give them the feeling they are right about their prejudices.
SEE: https://fortune.com/2021/05/14/disinformation-media-vaccine-...