If I understand you correctly, I think you are asking, "should a newer forum member and relatively inexperienced photographer critique an established member and experienced photographer?"
My answer is, yes you should.
I do photography as a professional only very part time, and I'm a graphic designer as my day trade. In graphic design, there's a heavy emphasis on critique and revision, because design has to convey a message perfectly.
In design, I'm much more experienced than some of my colleagues, but they still critique my work, and I theirs.
In my opinion, critique serves a lot of great purposes, not the least of which is keeping the artist humble. Experience counts for a lot, but fresh eyes do too. Tried and true methods count for a lot, but so does uninhibited, out of the box creativity.
The reality is, your critique might be WAY off and ten people will explain to you why it's not the best advice after all. But you tried, and now you know. But, if you're right on, then you've been a part of someone's creative process and helped everyone watching to see into your own creative thought process and maybe even some unique and amazing talent you didn't even know you had.
Most creatives need just as much practice giving critiques as they do receiving them. So practice!
Give critiques humbly, but honestly, receive them humbly, and respect them as valid, even if you never intend to implement them. That's the only way that critique can ever truly work. Otherwise, we're all just patting each other on the back, and nobody's work gets better that way.
I feel really strongly about open and effective critique, can you tell?
