https://www.gnu.org/fun/jokes/ed-msg.html
but I guess trends elsewhere were so keen on adding abstractions that now Emacs is an efficient, parsimonious choice by comparison.
Compared to VSCode, Eight Meg And Constantly Swapping does sound ridiculously parsimonious in 2026.
The core of GNU Emacs is written in C, and there are GNU-licensed Emacs variants which are entirely written in C. I really doubt anything like a new Zed/Gram fork would perform better than, say, QEmacs.