No, it's just irrational Suter hate. People think that he's a much worse pitcher than he really is.
As evidenced by the fact that Suter's numbers over the three previous seasons are almost exactly the same as McGee's.
Suter (2019-2021): 123.1 IP, 37 ER, 40 BB, 122 K, 14 HRs, 2.70 ERA
McGee (2019-2021): 121.1 IP, 44 ER, 24 BB, 126 K, 20 HRs, 3.26 ERA
People just think McGee is better because he had a bunch of saves last year.