How does Meizu 3s uninstall its own music video software? Can I complain to the Ministry of Industry and Information Technology if I don't allow unloading?
You should be able to uninstall the phone after root, but the music and video suggestions that come with the phone are still kept. If not, create a folder and put it in as garbage. I don't think it's useful to complain about such things. It's normal to bring your own music and videos, unless these two softwares have any bad behavior.