The plugin simply store data to import.
GitHub:
Demo Import Kit require the use of 3rd party (i.e. external) GitHub services to store demo data i.e files with extensions such as .zip, .xml, .json.
Source: https://github.com/about
GitHub Terms of Use: https://docs.github.com/en/site-policy/github-terms/github-terms-of-service
GitHub Privacy Policy: https://docs.github.com/en/site-policy/privacy-policies/github-privacy-statement
ThemeinWP Import Companion retrieves theme import data remotely from GitHub REST API.
GitHub Repository URL: https://github.com/themeinwp/demo-content/
License: GPLv2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html