Cynical people grossly over-estimate the value of their criticism. People either take pride in their work, and are self-critical, or they aren't, but if someone

Cynical people grossly over-estimate the value of their criticism. People either take pride in their work, and are self-critical, or they aren't, but if someone worked hard developing something, you complaining about the features you don't like just lowers their opinion of you. Focus on the positive, let them see the negatives on their own (everyone does). Developing open-source software is an instant cure for cynicism. Having your software torn apart from strangers who've contributed nothing is a quick fix for criticizing others.