Need Evidence about argument(TKAM)

That's a strange question, Atticus is obviously doing a fantastic job raising his children. Anyone who could question his parenting skills in terms of modeling proper behavior...... doing what they preach...... that person in on the right track.

“Heck,” Atticus’s back was turned. “If this thing’s hushed up it’ll be a simple denial to Jem of the way I’ve tried to raise him. Sometimes I think I’m a total failure as a parent, but I’m all they’ve got. Before Jem looks at anyone else he looks at me, and I’ve tried to live so I can look squarely back at him… if I connived at something like this, frankly I couldn’t meet his eye, and the day I can’t do that I’ll know I’ve lost him. I don’t want to lose him and Scout, because they’re all I’ve got.”

Made a mistake my fault