As usual DFC has a ball hair of being correct with some obscure bit of crap which is no doudt contadicted in another bit of publication.
To be fair I think a few have the rules wrong with the approach ban.
There are a few exceptions where you can ignore it.
Anyone want to have a guess were its perfectly legal to have a shot when the tower is saying it RVR 100m and O001? The fact that they might go in a sulk and park the birdy in the middle of the runway doesn't count.