There's some pretty low-hanging fruit on sourcehut's landing page (like vertical spacing) but it really does take 5 seconds to learn why to use sourcehut. It's right at the top with a bold header that says "welcome to sourcehut" and a literal bullet list of reasons.
i had to read your comment to understand that banner wasn't the user registration banner. Because of the huge input fields on the right, and the same gray background, i had the feeling this whole section was popin in for user registration.
This is an example of a total misunderstanding of one of the most basic graphical design principle : you don't group together information that is not related.
