AI text detection through pattern recognition is prone to errors because LLM text may defy patterns or human text may mirror AI patterns.

These detectors work through pattern recognition and given that LLM text is extruded as the byproduct of ingesting a massive corpus of human text, it's not a stretch to believe that some of this text under certain prompting conditions may defy the patterns. At the same time, human-created text may mirror that which the detector decides is AI.