What impact does lex luthor have on the plot of the 2025 superman film?

The only verified fact provided is that Superman is a known entity. No details about a 2025 Superman film, its production, cast, or storyline are included in the evidence. Consequently, any description of Lex Luthor's role or influence on that film's plot would be speculative and cannot be grounded in the supplied information. Without explicit data on the film's narrative or Lex Luthor's involvement, it is not possible to ascertain how the character might affect the story. To answer the question accurately, further verification from reliable sources about the 2025 Superman film and its depiction of Lex Luthor would be required.