I think it depends on the gun.
My S400 groups definitely tightened up with the adition of the AA silencer. It also lowered the POI slightly.
Where as my Steyrs don't want anything on the barrel end.
One big difference is some strippers are adjustable and I don't think any silencer are, so an air stripper may need a lot more fettling to fully test it.
Anschutz 2013 MEC1 .22LR
Miroku 3800 12bore