Why not? Having the night restriction removed from your license is very useful on it's own/without an IMC rating. Yes, an IMC rating is obviously advantageous but it's not required to fly after sunset. Flying at night is a 'blend' of instruments and visual cues - this is taught during the PPL course, night training and learned through experience. I've had some great night flights since having the restriction removed and I've always felt safe and confident in my abilities.
I agree that without an IMC rating/IR and good weather you shouldn't fly at night but the same can be said for flying during the day. It all comes down the the pilots decision-making abilities and whether they feel safe and competent.
With regards to the people missing in Idaho, hopes and prayers are with them.