People like to throw around "dated" like it's a curse word. & maybe it is - maybe art should have no relevance to past, present, or future. Though, I think when people use it, it's born out of an insistence that all things must retain relevance to the present - something I find to be a sickening redundancy.
Something I've always found fascinating are films released upon the turn of a decade, because despite quality, genre, nationality, & any other particulars you can think of, the film, whatever it may be, encapsulates the ten years leading up to it, and the ten years to follow. Performance, released in 1970 (though produced in '68, which does tend to blur the lines a bit further) reaches back & grabs toppings & ingredients from French New Wave & Italian Neorealism, uses the current "relevant" incorporation of rock n' roll & experimental cinematography, & acts as a jumping-off point for the abstract narrative. Past. Present. Future. It's the American gangster picture, filtered through the French gangster picture. Who wouldn't like that? B+