IS the phrase "Gentle Into That Good Night" making a reference to something else in this context?

Question

In this headline:

" Gentle Into That Good Night? Not Boris Johnson.

The British prime minister may be leaving Downing Street, but few expect him to cede the spotlight, or abandon the prospect of regaining his position."

is "Gentle Into That Good Night" a reference or does it have a cultural/local meaning?

Answer 1

It is a reference to a well-known poem by Dylan Thomas Do not go gentle into that good night in which he exhorts his elderly father not to accept death willingly.

The text is here.