I realize it's a sticky argument. If catcher determine so much how pitchers do, then maybe good pitchers are only good, because they had the better catcher, and the whole argument spirals out of control.
That being said, look at the PA differentials between Vaz and Plawecki:
Red= better differential by more than .010.
With Vaz (OPS Against)
475 ERod (.771)
441 Richards (.895)
387 Perez (.784)
381 Pivetta (.717)
243 Eovaldi (.723)
208 Whitlock (.589)
164 Sawamura (.757)
142 Barnes (.474)
141 Andriese (1.002)
136 Ottavino (.520)
111 Taylor (.669)
106 D Hern (.762)
96 Valdez (.702)
77 Workman (.828)
75 Rios (.599)
49 Houck (.459)
40 Brice (1.056)
Under 12 PAs: Bazardo .450, Davis .697, Robles 1.045, Brennan .788, Brewer 1.444, Arauz 1.150
with Plawecki
233 Eovaldi .668
118 Pivetta .718
66 Perez 1.248
56 Richards .682
56 Taylor .673
56 Houck .692
56 Ottavino .855
44 DHern .540
43 Valdez .418
33 Barnes .897
30 Weber 1.500
27 Andriese .675
24 Brice .492
19 Whitlock 1.158
12 Sawamura .444
Under 12 PAs: Davis 1.000, Rios .722,Workman 1.167, Arroyo 1.400, Marwin .000
The biggest swings in ratio of pitchers with specific catchers are these:
Only Vaz has caught ERod
Only Plawecki has caught Weber
Plawecki has higher %'s per PAs with Eovaldi & Pivetta than Vaz
Vaz has higher %'s with Whitlock, Barnes & Taylor
(I might have missed other wide disparities.)