There is a sin of judging hypocritically.
Like if you slam gay people and you’re a closet homosexual, for just one example. Or slamming someone on their weight and you’re obese.
What if you slam gay people and you're obese?
Is it really so clear that Jesus meant that you should only limit criticism if you can be accused of the exact same thing?
To say something is wrong is not always the same thing as "slam."
If the BTK met Jeffrey Dahlmer in prison, would he be wrong to say "you were wrong to murder. It is an evil thing to do"?
Wrong is wrong is wrong and right is right, regardless of the messenger.
In the sense the you get the speck out of your own eye first it is a bad idea to go around pointing out wrongs that you regularly practice yourself. But to say something is wrong that IS wrong, even if you practice it yourself, is still truth and truth is good for everyone be they guilty or not guilty.
The duty of the christian is to also share God's mercy and grace, His gift of forgiveness and redemption through the atonement made by God's Son Jesus Christ. There is hope for those enslaved to sin (which in one form or another is everyone). This is a truth a christian shares as a partaker in that forgiveness, not as some sinless example.
"Mercy there was great and grace was free
Pardon there was multiplied to me
There my burdened soul found liberty
At Calvary
well, certainly yes if you actually are doing the very thing you’re judging someone else for doing.
in a larger sense, it depends. How bad the person you’re judging is acting versus your own actions. I believe that intent makes a very clear difference. We all have sins. Some actively believe their sins are good, and promote their sinful lifestyles and behaviors and do all they can to silence and punish those that don’t agree. On the other hand there are people who battle against their own sins and do their best to kill their sin nautre, but fail. The intent of one is to revel in their sin, the other fights theirs. I don’t think there’s hypocrisy of judging one who practices sin and thinks it’s great by one who knows it’s wrong, fights against it.
I think that’s why Christ says examine yourself first. Your conscience will tell you if you’re being hypocritical because you’re not addressing your own problem first. If you have no problem, you won’t judge that person hypocritically. In a larger sense if you have other unrelated problems you’re not addressing they will come to mind.
But pointing out evil, pointing out the evil other people do, is not wrong. It is required. It is shining the light of truth on it. It is exposing it. Darkness doesn’t like the light and can’t stand the light.
If we cannot judge others because we’re all sinners, we’d never be able to point out the evil others are doing or promoting. If we’re not working on our own issues but just going after others, that’s hypocrisy. If we are working on our own issues, we will not judge others hypocritically because we will know that we are working on our own flaws and weaknesses.