Age old problem you give feedback and the op will just disagree or spit the dummy. If not the op then someone is likely to. I'm not interested in taking time to comment on an image to get little or nothing bacj
I've only been here a few weeks, but it seems this is the case.
If it's not wedding photographers publishing their
entire weeks' work in one post (seen one wedding, seen them all - sorry guys, I know it's your job and all but
really?), then it's truly abysmal portraits (happy-snaps?) that when commented upon simply result in the OP getting the huff and telling you that "while everyone's entitled to an opinion, he disagrees" - giving the impression that they're after a pat on the back and little else.
Thoughtful critique is easier to give the better the image - the photographer is usually more accomplished and is confident enough in his own mind to discount stupid comments and glean from all the posts the true nuggets of information that he might find useful without his precious feeling being trampled upon.
Beginners often aren't confident enough in their own abilities to tell the difference between 'proper' crtitique' and someone telling them their pictures just suck.
It's also very hard for someone whose job involved editing other photographers' images to be less...terse in manner.
If one of our photographers sent in images from a routine job that I considered sub-standard (and I'm not talking about basic skills like exposure, composition, white-balance, focus etc) - he'd get a very terse email from me reminding him that his contract was only good so long as I continued to approve his images for the board.
Bad-captioning was my bugbear and I was pretty ruthless with the guys if they slacked-off when providing file info.
Being 'nice' doesn't come naturally when it comes to bad photography. You won't improve if people keep slapping your back and telling you how great you are, when in reality your photos are only good enough to paper the downstairs john.
If your images are exhibiting any of the basic errors mentioned above, then there's no point commenting - if you can't see that the exposure is all wrong, the white balance is off, or your image is back-focussed, then you're beyond help - unless you say "My images are constantly too light/dark/back-focussed, what am I doing wrong? I've tried X, Y and Z, but nothing seems to work!" - that shows you've identified the problem but haven't the skills to correct it.