I stronly agree with the trending part. I used to browse it regularly to find cool projects, that may have been on HN or Product Hunt or something that week, but now, most of it is Chinese projects that are meaningless to me or large businesses latest nothing github project they made.
Chinese projects are presumably meaningful to people who can read Chinese, although it is meaningless to you. You are free to learn Chinese. It is a great skill to have.
If more people who can read Chinese are using GitHub, why is it a wrong choice for GitHub to surface Chinese projects in the trending page? I detect the racist attitude here.
Yes, it is a bad recommendation, but the trending page is not personalized. GitHub does provide personalized pages for discovery. Do you get Chinese projects there too? That would be a bug worth fixing. But it is not a bug to have Chinese projects in the trending page. It is expected feature.