Catcher's don't "allow" wild pitches, that's the point of scoring it a "wild pitch".
Let's say a pitcher, we'll call him "Roy", bounces a curveball wide of the plate with a runner on third.
Catcher A stabs at the ball with the glove hand, it bounces away, and the runner scores. This is properly scored a wild pitch.
Catcher B instead slides over and blocks the pitch with his chest, keeping it in front of him, and the runner holds.
The catcher may not "allow" the wild pitch, but the difference in defensive ability does cause a difference in whether a wild pitch occurs.
Sent from my iPhone using Tapatalk