Wikisource, like all wikis using CiteThisPage, displays a warning at the top of each citation page:

IMPORTANT NOTE: Most educators and professionals do not consider it appropriate to use tertiary sources such as encyclopedias as a sole source for any information—citing an encyclopedia as an important reference in footnotes or bibliographies may result in censure or a failing grade. Wikipedia articles should be used for background information, as a reference for correct terminology and search terms, and as a starting point for further research.
(eg. https://en.wikisource.org/w/index.php?title=Special:CiteThisPage&page=Executive_Order_13377&id=2024305)

This warning is not relevant for Wikisource, which provides primary sources, not tertiary sources. The warning should be removed.