The main gripe from the very small but vocal group of upset players was not actual "sandbagging" but probably more accurately described as "PDGA Bagging", where a person simply avoids being a PDGA member to avoid getting any kind of rating whatsoever that then allows them to enter any division they so choose.
True, but even at that it's hard to find true examples. Someone playing one event may have just guessed wrong. Someone playing multiple events, the local TDs should become familiar with and force into more appropriate divisions.
I once researched a year of events in my state, and couldn't find any non-PDGA member finishing in the Top 2 in any division more than once.