This is false. A very small amount of the core functionality of vscode is powered by native code, for example: find in files shells out to ripgrep, the majority

This is false. A very small amount of the core functionality of vscode is powered by native code, for example: find in files shells out to ripgrep, the majority of the other usages are mainly just exposing various native apis to js (like ptys, fast process trees, windows specific apis not surfaced by electron, etc.). The regex engine used for parsing textmate grammars is a special case that uses wasm.