My view: It's a chess move - inviting youtubers (involved w/the leaks) as witnesses.
With the bonus of being educational for the Court who may be wondering: "what is a youtuber?" and "what's the practical PR benefit of feeding these youtubers crime scene photos?" (answer: nothing)
Youtubers are not journalists/Press, are not a PR vehicle, have no reliable sources, insignificant social media influence. Rather, they are odd characters playing true crime theory wars on youtube. (UNMODERATED!!
Can you imagine?)
Argument point being: Neither the State or the Defense would find them useful for PR (covert or otherwise).
jmho