Suppose that in order to render stylized web pages, you had to install a non-free binary blob. You're free to not render websites you don't want to, and scroll

Suppose that in order to render stylized web pages, you had to install a non-free binary blob. You're free to not render websites you don't want to, and scroll through what's akin to a minimal HTML tree. Some content creators protect how their websites look more, some less. Would you still consider CSS a part of the open web?