It's not misleading, but the combination of requiring manual silencing and not giving any indication of what needs to be silenced seems self-undermining. Your target market is now only those users who are sophisticated enough to figure out what needs to be silenced, but not sophisticated enough to figure out how to do the silencing themselves. That's a pretty narrow market segment.
No, the copy doesn't give that impression, which I though was weird, because I thought that automatisation and 'silence as needed' would be the best design for this kind of application.
