Samir
I am a Chinese user. While the general public in China might not have direct access to GitHub, almost all developers can access and use GitHub-related products without any issues. Additionally, there are many products developed by Chinese developers hosted on GitHub, such as Vue (48.8k stars), Paddle (22.5k stars), Ant Design (93.4k stars), ECharts (61.8k stars), DeepSeek-V3 (83.7k stars), and so on. Of course, there are also many smaller projects, including my own.
What I want to point out is that there’s no need to worry about GitHub being inaccessible, as it is widely recognized and there are various ways to access it. Moreover, the benefits of using GitHub Issues far outweigh the drawbacks of having a fragmented forum. As long as no political issues are involved, it is highly unlikely for a project to become inaccessible on GitHub. Even in the hypothetical situation where GitHub becomes unusable one day, the built-in mechanisms provided by GitHub can be used to migrate the project, including its Issues.
I understand that making a decision about which platform to use exclusively can be challenging, as it means giving up the other. For example, you might consider closing GitHub Issues or the forum's issue-reporting section (users on the forum could be redirected to GitHub Issues using a pre-defined template for reporting issues).
I look forward to discussing more ideas with you.