Habra as a source of information

Wikipedia has a criterion for dividing sources into primary, secondary, and tertiary. Primary - these are any facts provided by a participant in events, such as blogs and forums. In the secondary, the primary material is correctly used. The tertiary source, in turn, summarizes the secondary ones. Wikipedia in most cases is a tertiary source.

ru.wikipedia.org/wiki/VP : AI

Habratopik can be a source of any of these three types, but Habra herself, most likely, is neither an “encyclopedic article”, nor “Vasya Pupkin’s blog”. This is something average, this is a presentation and retelling of already existing material, for example, a review of a site on the Internet, although there are original copyright materials on Habré.
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That's what I currently think Habrahabr ...