I think the "calling BS" objection was to your categorical statement: "No computer-to-computer interchange format has comments," and not about whether they are

I think the "calling BS" objection was to your categorical statement: "No computer-to-computer interchange format has comments," and not about whether they are a good idea or not (that is a separate argument). How about ".comment" sections in ELF binaries, do they count? https://wiki.osdev.org/ELF https://wiki.osdev.org/ELF