So... I have no idea how to do spoilers. Welp, I hope I'm not ruining anything, but it's April Fool's Day (for some people) as of this post. This means that the rebranding and ads are a joke. You can also tell cause they go around uBlock Origin, which would be quite suspect for many people. Then when you use the element picker, you'll see the "ads" are just image files. Not ad domains.
That said if you do click on them, you'll get sent to the related manga the image is from. So it could be useful to find something fun that catches your eye.