I'd never heard of this concept of "kóryos" before, and even though the article is extensively referenced, there are somehow no references in the first paragraph introducing the subject matter nor a section regarding when this supposed idea was introduced into historical research or how it developed.
Then, what makes this article much more suspicious in my view, is that it was essentially written fully from scratch in one revision by a single user less than a year ago [0]. And following this, a huge red flag is that a significant number of the very few internal links [1] to this page were only added by the very user that first wrote this page [2-5].
I'm sorry, I really hope that (best case scenario) this is a legitimate concept, and the page was created by someone who happens to be doing a PhD on the subject—though in that case it reeks of violating the "no original research rule" of Wikipedia. In the worst case scenario, this is either a personal fantasy of the author or something being spread with some ulterior motive.
[0]: https://en.wikipedia.org/w/index.php?title=K%C3%B3ryos&oldid...
[1]: https://en.wikipedia.org/w/index.php?title=Special:WhatLinks...
[2]: https://en.wikipedia.org/w/index.php?title=Fianna&type=revis...
[3]: https://en.wikipedia.org/w/index.php?title=Maruts&type=revis...
[4]: https://en.wikipedia.org/w/index.php?title=Crypteia&type=rev...
[5]: https://en.wikipedia.org/w/index.php?title=Ephebos&type=revi...