Someone I don’t know making a website I didn’t ask for isn’t doing anything for me, and doesn’t have my agreement or consent.

Yes they are, they are hosting a website which you’re visting to presumably consume some of the content or use in some way. They dont need your agreement or consent, you are choosing to vist the website. Just to be clear we arent talking about paying websites you dont vist. We are specifically talking about websites like a blog