By that argument, McGuire, Grandal, any lefty or SH playing against RHPers…it wasn’t a bias against Vaughn so much as he was L/R/L obsessed against RHP and the defense weighing.
Pollock was losing at-bats for the same reason (LH hitter obsession), although not off to the same offensive start.
If there was no Abreu around, AV would get 90-95% of playing time, though.