> one should simply accept them and understand that they are part of the game being played. If they are expected behaviors, being "pissed" about them simply is foolish.

Does this apply to athletes who are upset when referees seem to be consistently favoring their competitors? Does it apply to people living under an oppressive government? Does it apply to a person who is being verbally abused by a spouse?

Sure it'd be great if these people could seek to improve their situation through rational means, or perhaps just accept it if they can't change it, but humans and emotions don't work that way.

> reacting emotionally rather than rationally is silly

Humans are emotional creatures. Expecting humans, even yourself, to act rationally shows a misunderstanding of human psychology and behavior.