These are two different things. One is working at night, and the other is working non-stop. I like working at night (I wake up at 1ish pm and go to sleep at 4-5) because it's more quiet.

I don't put in 16-hour days, though. There's a clear distinction between the two, and "burning the midnight oil" refers to the former. You can get the advantages of working nights without overworking.