That's true. However consider the context that: i) Emacs has stopped appearing even at the bottom of popular surveys like stackoverflow years ago ii) Most Emacs users probably aren't too heavily into customisation iii) Or they likely already achieved their heavily customised system years ago, and mostly enjoy stability nowadays (that's me) iv) Most customisations are too personal in nature and aren't published online (also me)

Given that, I think for Elisp to still come at #25 in this metric is a huge credit to its ecosystem for sure, but I still think that puts into perspective how much of a non-entity Common Lisp has become.