It says no functional weapons were turned over. That could mean they rendered them unusable before turning them over.Check out
Official No operational USMC weapons left behind in Yemen embassy evacuation
Ex-Marines angry over reports on guards weapons in Yemen embassy - Washington Times
I really know it kills you to have anything positive reported about the US military, but there is ways YOU could've found the same links - if you really wanted to,
It doesn't mean they weren't turned over.
Weapons that have been destroyed are no longer weapons, they are junk.