AI tools can generate data analysis that looks polished, comprehensive, and credible. What they cannot do is own the decision that follows from it. That responsibility stays with the leader presenting the analysis, defending the assumptions behind it, and making the case for a specific course of action. When leaders treat AI-generated analysis as a finished product rather than a starting point, they are not making faster decisions. They are making less accountable ones, and creating real professional risk in the process. Data reasoning is a leadership competency, and it has layers that most organizations are not yet developing intentionally: interrogating assumptions, understanding data quality, reading the audience, and building the narrative that connects analysis to action. AI changes the tools available for that work. It does not change who owns it.