Why doesn't Ubuntu provide the compiled version of emacs .el files

I just noticed that when I start emacs on MATE 20.04, the system packages it loads are source files, not their binaries. I’m curious to know why since, as I understand, the binaries load much faster.

For example,

Loading /etc/emacs/site-start.d/00debian.el (source)...done
Loading /etc/emacs/site-start.d/50auctex.el (source)...
Loading /usr/share/emacs/site-lisp/auctex.el (source)...done
Loading /usr/share/emacs/site-lisp/preview-latex.el (source)...done
Loading /etc/emacs/site-start.d/50auctex.el (source)...done
.
.
.
Loading personal...
Loading no-x-settings...done
Loading ssh...done

>Solution :

The listed *.el files

1. are too small, too short, and over too quickly to benefit from Emacs Lisp compilation. Read them.
2. are only encountered once, at emacs startup.

A better usage pattern is to start emacs once, enable (server-start) in your ~/.emacs, and use emacsclientto access and reaccess it.
In your ~/.bashrc,

export VISUAL=emacsclient
export EDITOR="$VISUAL"
alias emacs="emacsclient"


will make using emacsclient easier. Read man emacsclient.