Well it is certainly more useful that pot-shot or nit picking.
I have known a number of really great artist/photographers in my lifetime, when they were young.
Can you actually imagine that trivial compositional nitpicking would have been useful to them, or to my friendship with them? I looked at their work, we talked about photography. I'm not taking just talented amature friends, but acquaintances who went on to have shows at the Whitney and MoMA.
Some photographers are good, some aren't. Same as any other profession. One can get a lot better, if one is around mentors, but the improvement is limited. But one has to be careful. I had an awful drawing teacher, that I did not understand was a terrible artist when he was my professor. Years later I wanted to draw more like William Wegman, but it was too late, the bad habits he gave me were ingrained.
Here some ways to mature your work:
You look at "better" work than your own, but you don't copy it.
Look at "wrose" work than your own, but you don't copy it.
You let your mind wander into work you are looking at when you visit museums.
You learn to read people you trust, and trust those you admire.
Learn by watching others.
And most important do not take advice from those who you don't know well, or at least admire and trust. Looking at individual work on the web is pretty useless IMO.
I have worked with a lot of students using the nit-picking method, their work does become much more tolerable, especially when I would question why they were taking photos of stuff they could care less about, and began taking photos of subjects they cared about like friends and family.
One year I became so exhausted by "street" cliches (when I was in grad school and easily exhausted) that I made them do a Larry Clark, and only shoot inside their family home. Best photos I ever got from first year students.
To be "brutally" honest most photos which appear on the RFF are not great art, but many are VERY interesting to me, or I would not waste my time looking at them.
And if hobbyists like being picked on -- it's their life.
🙂
William Wegman