Your statistic doesn’t support your conclusion. His statement is not contradicted, and is in fact true.
Several articles about how poorer taxpayers are significantly more likely to be targeted:
https://www.cbsnews.com/news/irs-audit-eitc-five-times-as-likely-to-get-audited/
https://www.propublica.org/article/irs-sorry-but-its-just-easier-and-cheaper-to-audit-the-poor
An article about how audit rates are dropping in general, and dropping fastest for those with the highest incomes:
mk bud. i cant believe you still dont understand why those rates are misleading. good luck out there