yogibooboo:
King Soloman taught us “Al tocheach letz, pen yisnoeko. Emor l’chochom, v”yehoveko” Do not rebuke a letz, since he will hate you[for it]. Tell a wise person, and he will love you.
Shelo says, its one person! Don’t rebuke a person by telling them, or thinking they are a letz (i.e. irresponsible, goyta raising kids, obnoxious, etc etc etc), they’ll hate you for it. Tell them and recognize they’re a wise person (only wise people will choose to heed your advice anyhow!), rebuke them this way, and they’ll love you.