From the bill's text, as quoted by the article:

> (b) The social media platform is liable to an individual account holder who received user-generated content through a social media algorithm while the individual account holder was under the age of 18 and was using the individual account holder’s own account, if the social media platform knew or had reason to know that the individual account holder was under the age of 18 and located in Minnesota. [...]

Sounds like they're not requiring unreasonable knowledge of faked ages.