Deletion of Thomas Steiner

Comment: I have added a first reference, a 2012 newspaper summary of the subject's career. That and other available sources, such as https://www.sixpackfilm.com/de/catalogue/filmmaker/282/ this summary, indicate that his films have been shown at the Tate in London and the Centre Georges Pompidou in Paris, though I would prefer to find more context on these and other exhibitions and the extent to which they may support the  criteria
Stance: comment
Cited policy: Wikipedia:Notability (:WP:NARTIST)