The marketing screenshot is quite misleading. Most of the websites out there already have favicons. At least my chrome window looks nothing like the one presented there.

I didn't include any sites with favicons in the screenshot due to copyright concerns.

I see, it would be cool to give an example of at least one site with a favicon, to see immediately whether it will be replaced or not.

It is mentioned in the description, however it will give an example of what you mean by "relevant" emoji.