Too me it's almost completely due to the current statuary playing the outfield. Compare the range of Benintendi, Bradley and Betts that Ridriguez enjoyed earlier in his career to the current group of Verdugo, Hernandez, Renfroe, Schwarber, Cordero, Martinez, et. al.It's the double. He's given up 41 this year. That's 8 more than his previous career high and if you even out PA, it's 3 more than any other season over the course of 672 PA.
It's more pronounced since 2018.
2018: 1 double every 31.3 PA
2019: 1 per 28.6 PA
2021: 1 per 16.4 PA
HR rates were 1/34.6, 1/35.8, 1/35.4.
Doubles are obviously a product of BAbip, I'm not sure how to isolate out ISO from luck though.
I don't have any point, just that he's given up a ton of doubles, like almost twice as many.