“Bombshell” is the most overused, over-hyped and under-performing word on the internet. It is often used by (a) those with an affectation for “hope and change” to complement whatever ‘Baader Meinhof’ complex symptom is eating at their brain at the moment or (b) someone tossing some bytes of revenue-generating, red meat clickbait onto some web server.
2nd most overused. 1st place goes to "Racist."
Although, "Collusion" and "Obstruction" get honorable mentions.