Whether it is minuscule or meaningless is isomorphically equivalent to the question of whether reproduction itself is meaningless. I'd say the meaning in this case is in the eye of the beholder.
The physical reality is one and only.
I'm sorry, I don't understand what you're trying to say.
I guess parent is suggesting the competition over stupid shit is really about signaling reproductive fitness, like a peacock's tail etc.
Any small microcosm will ultimately generate heated, competitive spirit -- even when the reward is minuscule and virtually meaningless.
In other words: people love to compete over stupid shit.