The phrase "art at fault" can be replaced with several synonyms, depending on the context in which it is used. Some possible alternatives include "art in question," "art in error," or "art in error." Other options might include "problematic art," "flawed artwork," or "faulty creation." In some cases, "art at fault" might also be replaced with phrases like "defective art," "substandard artwork," or "deficient creation." Ultimately, the most appropriate synonym for this phrase will depend on the specific circumstances and the tone and context of the discussion or analysis in which it is being used.