Complex sentence: The article's references show that the topic satisfies criterion 4b; permanency is a component of criterion 4d but not of 4b, so permanency is not a relevant question, despite 4d probably being the most frequent consideration for many articles.
Split into simpler sentences: The article's references show that the topic satisfies criterion 4b. Thus, permanency is not a relevant question, despite 4d probably being the most frequent consideration for many articles.