Revolving the discussion around the concept of triggers is an appreciable basis for giving advice, but as a student of interpersonal communication, I'd argue a better center is the concept of "expectations". In fact, you touched upon this throughout the article.

Your concept of triggers, and the Big Three you mention, evolve from miscommunication of expectations. One party believes another other party has agreed to meet certain expectations, when in fact they have not. (This describes the vast majority of problems between rational, self-interested entities, including romantic relationships and business partnerships.) Most often, this is because the expectations simply have not been expressed, were vague, or have changed. One of the common traits of the Big Three are that they are circumstances of voluntary employment that are rarely discussed.

From there, different bits of advice might be derived, including: make ongoing efforts both to break down cultural barriers to discussing the Big Three and to explicitly identify other unexpressed expectations, to understand disappointment/rage in terms of unmet expectations (keyboards "should" have a long key life, and since you don't chew loudly with your mouth open others "shouldn't" either), to frame disagreements in terms of unclear expectations. This can restore a sense of rationality, responsibility, and constructivity to the situation.