Ah, how wrong you are Skieur. I'm a professional photographer (I make 100 percent of my income from photography).
If I was ripped to shreds when I first started out, I would have promptly sold my camera.
But I found the Photo Forum back in the olden days. Back then, you got something like, "While your composition and emotion is good, I feel that a crop would help, as would adding some reflective light. Here's how I do it" followed by sample photo and recommended crop and lighting setup.
Far from, "Your focus is all wrong. It's overexposed. This needs a total overhaul".
See the difference? Surely you do.
And my mentors, who I had several of, would say, "That's not bad". (As they took the time to learn what my experience level was). "Next time try to lower your flash output, and bounce it so you don't have so much direct light". (This being an actual bit of advice).
When someone is just starting out, they KNOW that they don't know what they are doing, but they want tips and pointers. Telling them that they suck helps them nada. They should be treated in the same fragile sense you would treat an infant, because in photography knowledge, that just might be exactly what they are.
When a pro posts, I say go at them with both barrels, but only if you A)have some experience doing the same type of work-so that you know the limitations and expectations of said shoot and B) aren't just repeating rhedoric that you heard somewhere, but mostly C)you still use an ounce of respect you would give to any person you met, face to face on the street.
So as a paid pro, I can tell you without reservation that your above statement is ill informed, and completely incorrect.