>>1
Interesting. He says it's stable for production in the video but isn't so assertive in his webpage: http://akrl.sdf.org/gccemacs.html
I've never looked into elisp's bytecode, there's a project to document it here: https://cdimage.debian.org/debian-cd/current/amd64/iso-cd/debian-10.3.0-amd64-netinst.iso