It's cringe worthy to see that the original paper itself is editorialised.

Title should be: Simple Self-Distillation Improves Code Generation

"Embarrassingly" has a history as a technically meaningful word roughly equivalent to "maximally", see "Embarrassingly parallel"

https://en.wikipedia.org/wiki/Embarrassingly_parallel

The phrase embarrassingly parallel has a history in computer science.

Many computer science paper titles allude to past titles in other CS papers.

Calling it “cringe worthy” is unnecessarily mean. There is context and history you don’t understand.