I heard a similar homily on that scripture theme. Here is my honest thought on the matter.
I think “fraternal correction” of the type described made some sense in the early Church. The Church communities were close-knit; people knew each other well and relied on each other for spiritual support and other forms of support; and there might not always be a priest or a decisive authority figure around. One early Christian acting badly could reflect poorly on the others, and the teachings everyone was trying to follow were new and undoubtedly mistakes were made that needed correction before the whole community got off down a wrong path.
Fast forward to today. Most people in parishes do not know each other well, with some exceptions. Many people are transient, and many people wish to protect their personal privacy. Although we may have a priest shortage going on now, there are generally priests or spiritual directors available if someone wants to talk over an issue, and the Church has become much more established.
if someone is your family member or close friend, then it makes sense to offer a friendly correction, although you know it might not be well received and you run the risk of alienating the person. At least if you’re close to the person, you probably know the basic facts of their situation, how they got in it, etc.
If, on the other hand, the person is a more distant friend or just an acquaintance, you likely don’t know all the facts of a situation, so any “correction” other than maybe suggesting they talk to a priest or go to confession is presumptuous and reinforces the stereotype of Church people as busybodies.
With respect to my own experiences, if someone who isn’t my close family member, close intimate friend, or priest (usually in the confessional) decided to suddenly hand out an unsolicited “correction”, I would drop them like a hot rock. Already did it once to somebody who overstepped her bounds by lecturing me about my marriage when she had met my husband all of once for a few minutes at our wedding and I had never discussed my marriage with her as she was not a close friend and our lives had gone in vastly different directions. By contrast, my mother when she was alive often felt a need to lecture me about my marriage, and while I didn’t like it coming from her either, she was my mother, knew both of us well, saw us together enough times and was entitled on all those bases to offer her opinion, even if I didn’t receive it in good grace.