The wikipedia is more information dense, but that's not always what I want in a general purpose reference. Also hyperlinks are good if you want to read the article. But I don't want to have to click through hyperlinks, and thereby lose focus. Sometimes I just want to know just enough to complete the context in which some thing was mentioned. In the opening sentence there's a whole phrase "solid form of the element carbon" hyperlinked - to what is not immediately clear - but curiosity peaks the mind and I see that it's to an article on carbon allotropes. Later on it says it's "metastable" so I need to know what that means, but it just links to an article that's equally obstruse and so I have to go on an endless rabbit hole of hyperlinks. Britannica usually explains briefly in parentheses what some piece of jargon means.