Unfortunately, these typs of comments have become all too common. People seem to love exacting their pound of flesh in comment sections, web forums, etc. These "webexperts" have no idea of the cred of the photographer they bash, the galleries that display her work, nor the highly positive praise she gets in the press. They simply think they are experts because they have their nice shiny DSLR and snap thousands of shots of nothing of consequence....but have highly inflated opinions of themselves.
These people would never spout off in person like they do on the web. They typcially have little confidence in the real world. They know if they did spout off in the real world like they do online....they would get the reaction they so justly deserve...and be put in their place.