What is the specific usage of the expression, "Boom goes the dynamite"? and why is it still frequently used in a grammatically awkward way? [closed]

It's a fad.

an intense and widely shared enthusiasm for something, especially one that is short-lived and without basis in the object's qualities; a craze.

-Lexico

...like the hoola hoops and Davie Crocket / Daniel Boone coon-skin caps in the 1950s.

...as a 1960s Andy Warhol said,

"In the future, everyone will be world-famous for 15 minutes."

"Boom goes the dynamite" seems to be having such a moment:

It sounds similar to...

Slam dunk!

or even ...

bada bing, bada boom

...as popularized by the American Mafia series The Sopranos .

Those sayings were very popular for a while, but then died down in usage: still understood; just no longer fashionable.

If "Boom goes dynamite" survives 5 more years then possibly it will become known as a saying.

Right now,

It would not be acceptable in an academic setting.

Neologisms have no place in academic writing unless the topic concerns colloquial speech.