Google already does this. Searching for "YMYL" (Your Money or Your Life) should produce useful results:
> For pages about clear YMYL topics, we have very high Page Quality rating standards because low quality pages could potentially negatively impact a person’s health, financial stability, or safety, or the welfare or well-being of society.
> For pages about clear YMYL topics, we have very high Page Quality rating standards because low quality pages could potentially negatively impact a person’s health, financial stability, or safety, or the welfare or well-being of society.
https://static.googleusercontent.com/media/guidelines.raterh...