There is a whistleblower claiming this very thing. https://www.cnbc.com/2019/04/02/senate-panel-probes-whistleblower-claims-of-poor-faa-training-on-boeing-737-m

There is a whistleblower claiming this very thing. https://www.cnbc.com/2019/04/02/senate-panel-probes-whistleblower-claims-of-poor-faa-training-on-boeing-737-max.html https://www.cnbc.com/2019/04/02/senate-panel-probes-whistleb... Claims aren't evidence. But testimony is evidence. How compelling that is depends on their credibility, qualifications, and whether there's corroborating evidence.