Is it wrong to have M to F MPO FDU's?

I inherited this configuration.

We have a two spine switches and all of its downstream patches are to a FDU it the spine rack. That single large FDU feeds to smaller FDU's in other racks that connects to TOR leaf switches.

Thing that caught me a bit off guard is the MPO connectors in the leaf rack FDU's are female.

I though it would be standard that the connectors on both sides of the FDU would be male and the device transceivers would be male so I would only need F to F patch cords?

So is this a very non standard configuration or a legit option that someone chose?