1-34-30 p6
Yes, I guess DDRMI is inop in that case.
If it was an ADF only DDRMI you could still have relative bearing from the needles, I guess. But with VOR needles, indications would be totally wrong.
The DDRMI has conventional red fail flags, so there is no need for being in the INOP list. Other stuff that is lost when you have electrical failures is not in the list, either.