I wouldn't necessarily have thought it was AI-generated from the style although the fact he is apparently the only person in the auditorium hints that it isn't an actual photo of Wittgenstein at the movies. Unless he went to very unpopular films, that is.
Either because they are from a camera or from someone else.
(Just like it's useful to give sources for almost any other piece of media or factual claim or even exercise you are using.)
Anyway I think you did a great job with Midjourney. Even the coarse clothes correspond to clothes Wittgenstein wore. Would you like to share your prompt?
*Wittgenstein in the front row of a movie theatre, 8k, hyper realistic --q 2 --v 5 --s 750*
I had to do a few re-runs as it kept putting him in a suit and tie. In reality he rarely wore one.