According to Jeff Dean on Twitter, the use of a non-zero-based Y axis in AI performance graphics can create a misleading impression of significant differences, even when the actual change is as small as 1%. He recommends referencing Tufte's 'The Visual Display of Quantitative Information' for best practices in data visualization. This issue highlights the importance of accurate and transparent data presentation in AI research and business reporting to ensure stakeholders make informed decisions, as stated by Jeff Dean.