I don't know what history of photography or image creation would have anything to do with a critique. Even in a documentary photography I see little reason to connect the two, except when a comment has nothing to do with how it looks but only relates to what it shows.
The saying "have to know the rules to break them" has also long lost a lot of meaning since the advent of digital capture.
One can be an art graduate and make nothing but generic images, another, one completely green in art theory, yet pulling out visual gems time after time.
If one asks for a comment, and another feels compelled to do so, no problem. Unsolicited comments are a different story. We're long past the times when compositional conformity was required for a higher recognition. An image can have impact on one viewer and none on another. Tastes are all over the place, a complete chaos. If one needs to sell an image, he surely needs to know his audience, which usually means sucking it up to specific tastes and often (at least) compromising own. So to this end, criticizing ones works without knowing who and what was behind its creation, is little more than trying to be the wiser.
One caveat of evaluating seen quality on computer monitor is the already mentioned uneven calibration, more important in color, but not meaningless in B&W either.
With that said, it could be fun game at times to start a discussion on one's image and see where it goes. Open talk, gloves off, go at it and make a point. Take that frame, re-compose (-crop), repost and see where the argument goes.
OP from 2003 was right asking the question though.