On Tue, 24 Apr 2018 17:08:22 -0700 (PDT), wrote:

snip

A zip file is inherently of unknown content/nature, so very much something liable to make people paranoid. And something it'll be hassle for the maintainers to check. And not necessary.

Have you ever been on Thingiverse OOI?

https://www.thingiverse.com/

Thousands of .zip files on there potentially being downloaded and
opened by loads of people and like that for a reason.

Cheers, T i m