Perhaps, Bichette led the league in errors from an outfielder in 1999 with a whopping 13 errors and also -34 defense runs saved.
One other factor I forgot was the home field adjustment in WAR. Coors field pre-humidor was just a bonkers place to hit. So his season was actually just average in 1999 for the typical hitter playing at Coors. His OPS+ was only 102.
If you move him to DH it knocks out the negative dWAR but it can't help for the park adjustment factored into WAR. And Edgar was playing at Safeco field at this point, which played as an extreme pitchers park even during the roid years.
For another data point that will illustrate just how wild 1999 was offensively, look at Larry Walker
https://www.baseball-reference.com/players/w/walkela01.shtmlHis 1999 and 1997 seasons are remarkably close in many ways with his offensive performances. In 1997 he has a 9.8 WAR and wins the MVP, in 1999 he has a 5.1 WAR and finishes 10th in MVP voting.