Can MediaRouter be used to detect mirroring?

Question

I am using MediaRouter from androidx.mediarouter:mediarouter

Can someone confirm, suggest a better solution, or correct me if this code can properly detect mirroring:

fun Activity.isExternalDisplayConnected(): Boolean {
    return MediaRouter.getInstance(this).routes.any { route ->
        !route.isDefault && route.playbackType == MediaRouter.RouteInfo.PLAYBACK_TYPE_REMOTE
    }
}

So basically I am checking if there is any Route that is not default and playbackType is PLAYBACK_TYPE_REMOTE.

It works on my two test devices but I am curious if this will generally work every time. And if this function can return true on some devices that don't have mirroring turned on.