I fully disagree with your take.
You are assuming the default is negative. I think your explanation might be possible, but that by default it's wrong, as most people are not cynical/annoyed or any other negative quality.
My fundamental belief is that most people are nice and want to do good things.
If you are surrounded by cynical/annoyed people, you may be in a toxic environment, which may taint your judgement for other situations.
NB: either one of us could be making a fundamental attribution error https://en.wikipedia.org/wiki/Fundamental_attribution_error and it might be hard to find the truth, as it boils down to beliefs.