This is a better than "decentraleyes" since it is in active development. There are many more features in this compared to the other extension. I am finally making the move after using Decentraleyes for so long.
Firefox Sync is a great feature. Yes your fingerprints are tied to your firefox account but its better to have it than not have it.

非常好！不知道能不能自定义添加本地 CDN 资源文件 ？看上去没提供这个功能，我猜测估计是访问本地文件的权限问题所致。

Trying it out after having Decentraleyes for a few years. Privacy Guides and the Opt Out podcast spoke very highly of it so will give LocalCDN a go!

能否自定义添加单独文件到Local CDN,比如cdn.jsdelivr.net/path/myfile.js, 能否把myfile.js添加到Local CDN?

A must have if you value for privacy on the internet!