[mattmanser]

Should mainstream media check after every shooting if Elvis had been spotted leaving the scene because he never died and was cryogenically frozen for use by the NSA as a super assassin to further their role in subverting the NRA?

No, only an idiot believes nonsense like that, like only an idiot thinks crisis actors are used to stage mass shootings.

Somethings aren't worth investigating. And as the article points out, actually investigating them often backfires into giving them an sheen of legitimacy.