The contrastive phrase “It’s not X, it is Y” and similar variations are often found in AI-generated text. This structure is a rhetorical device used to create a false sense of insight. Here’s why this structure is common in AI writing:

Why AI Overuses “It’s Not X, It Is Y”

• Predictive Pattern Matching: AI models are trained to maximize engagement. They often choose this structure because it is common in quality human writing that compares or contrasts concepts.
• Creating False Nuance: The structure can make information sound more profound, even when it repackages obvious information.
• Formulaic Style: AI often uses structures like the “rule of three” and contrast framing.
• Safety/Neutrality: It allows the model to present a “balanced” view. 

Examples of AI-Generated Variations

• “It’s not just a tool; it’s a partner.”
• “It’s not a bug; it’s a feature.”
• “It’s not about the destination; it’s about the journey.”
• “It’s not just a trend; it’s a fundamental shift in how we work”. 

How to Identify and Avoid It

This structure is a common sign of AI-written content. To avoid it in AI prompts:

• Explicitly ban the phrase: Tell the AI: “Do not use ‘not X, but Y’ or ‘not just X’ structures”.
• Favor concrete details: Ask for specific data and examples instead of vague statements.
• Edit for voice: Replace the structure with direct or unique phrasing. 

Sources: https://www.blakestockton.com/dont-write-like-ai-1-101-negation/