The popular web server Nginx started in Russia almost 20 years ago. Nobody would have used the software of such dubious origin if it was closed-source. Being open-source allowed many more eyeballs and developers which increased trust in the project.

With the current geopolitical landscape, projects from Russia, China and increasingly the United States must be open-source to become widely used and trusted.

If China-based JingOS aren't developing their work publicly, for most developers it may as well not exist.