Akkha script (used by Eastern Magar language) in ISO 15924?

[Richard Wordingham via Unicode]

On Mon, 22 Jul 2019 17:42:37 -0700
Anshuman Pandey via Unicode <unicode at unicode.org> wrote:

> As I pointed out in L2/11-144, the “Magar Akkha” script is an
> appropriation of Brahmi, renamed to link it to the primordialist
> daydreams of an ethno-linguistic community in Nepal. I have never
> seen actual usage of the script by Magars. If things have changed
> since 2011, I would very much welcome such information. Otherwise,
> the so-called “Magar Akkha” is not suitable for encoding. The Brahmi
> encoding that we have should suffice.

How would mere usage qualify it as a separate script?

Richard.