"Oh, I've read that text many times. You omit one very important point. He said that "if I judge" - not "when I judge" - if and when are two very different words."
He also didn't say,
"John 8:15 Ye judge after the flesh; I [will never] judge [any] man.
Saying "if" doesn't rule it out. Let me give you an example.
(if a young man says)"I have sex with no woman, but if I do, it will be when I'm married."
It means he's just waiting until the time is right. Not that it will never happen.