css中的“投影”媒体类型有多可靠？

I'm working on a corporate project, creating a system that will be used for years. I've recently come across the "projection" media type in css, and I'm imagining potential benefits it could have for the users, giving presentations, etc, but I don't know if that's just in my imagination, or if there is a real world advantage here. So far all I'm aware of is that some versions of Opera use the media type in fullscreen mode.I'm working on a corporate project, creating a