The plank speck thing does not say not at all to correct another person who has the speck. It says you must First get rid of the plank in your own eye! The way I view this analgy is this: the plank and speck are of similar nature. Yes they’re both sins, but I think they’re closer related than that. I think the point is don’t correct someone of hatred when you suffer with the same (or worse) hatred. However, if you deal with your hatred, or never had it bad in the first place, then you can effectively and successfully correct the other guy. But it’s ineffective if you have hatred issues still. In all of this, it’s important to realize that nobody is perfect, so there’s always gonna be a little speck in every bodies eye.