In a way, each and everyone of us are somewhat emotionally attached to those photos that we decide to make visible to many people, I should think. Which puts some into the defensive the moment they have made their work public. Acting or speaking out of the defensive will always make the photo owner react with some personal distance towards another who calls them out on the flaws of their photos.
However, becoming defensive to a degree where the obvious flaws are not recognised as flaws, but are being defended to no end, will alienate those who offer their opinions and/or critiques/critisism, too. And off we go ...
We have a saying in my language (German), which roughly translates into "The way you shout into the woods will be the way the echo comes back", and another that says "Its the sound that makes the music". When you give rude, cynic, aloof remarks only, the other will feel more pushed into the defensive than ever before. If your music is harmonic, the whole thread will stay harmonic.
Some have it in them to give ... what was that very apt term again, must scroll and look ... poo sandwich (thank you mctusz!

)-critique, and some don't. So if a photo sports all sorts of flaws, they'll just go point those out. Full-stop.
Those beginners who do decide to present their photos to a wider audience - move out of the defenisve. Develop some distance between yourself and the photo you present, move away, look from afar together with the viewers who are NOT attached to the photo at all, listen, think, don't defend yourselves right away, think some more and learn. Also from the non-sugarcoated (non poo-SANDWICHED) remarks.