 :Nobody, and not the tag, is saying that primary sources shouldn't be used. But they are simply never enough to write a proper encyclopedia article. The tag should be appropriately placed on all articles that lack reliable and independent secondary sources to help draw attention to the problem (which it is). :If secondary sources cannot be come up with for a certain article, the question is whether that article should really have a place on Wikipedia rather than to absolve that page from the most basic requirements of an encyclopedia article. — ⁠ 