First off thank you, this seems like very interesting research!
Hope these questions doesn't come off as rude:
The research behind Jaws aims to build awareness that unknown interpreters can be dangerous.
but that would require said VM to be actually installed on the target machine in the first place?
Since Jaws code is composed entirely of whitespace characters, it can easily coexist with other programming languages to create polyglot code.
Since most languages have code formatters and linters, some even auto format on save can it really survive?
then you have whitespace sensitive languages such as Python that casts doubt on this premise?
also note: under emacs one can use the M-x fixup-whitespace