What event is incorrectly associated with the PGA's inaugural establishment year?

The FedEx Cup is indeed the event that is incorrectly associated with the PGA's inaugural establishment year. The PGA of America was established in 1916, and the events like the Ryder Cup, the PGA Championship, and the Senior PGA Championship all have historical ties to the PGA and its timeline.

The Ryder Cup began in 1927, the PGA Championship has been held since 1916, and the Senior PGA Championship started in 1937. In contrast, the FedEx Cup was created much later, in 2007, as part of the PGA Tour's efforts to enhance competitive golf during the PGA Tour season and to reward players for their performance throughout the entire year. Thus, associating the FedEx Cup with the establishment of the PGA is misleading, as it did not even exist at that time. This distinction highlights the evolution of professional golf events over the years and the differing timeframes of their origins within the context of the PGA's history.