Board Thread:Versus Debates/@comment-29769110-20170730202400/@comment-25122992-20170801115153

Yep, that's right, Madara has both never shown using Izanami nor mentioned to be its user. Also, the jutsu aren't similar in nature, it's just that Izanami was created as a direct counter to Izanagi. In fact, their mechanics are entirely different from each other.