I don't think this is a dumb question. You ask to learn and with three or more replies you would have gotten your answer. I'd have been surprised if Satoshi had had any profile picture considering that he is a symbol of the word anonymous. What I think is that in the cyberpunks groups where they had earlier hanged out and exchanged ideas, he/they would have had a picture but soon took it down before anyone could trace anything back to him. It is just a guess though so I could be wrong.