My example is meant to show that principle is absurd, not that OP actually believes in that consequence. I admit the point could have been delivered friendlier.
As for charitability, we are all prone to agree to what fits with what we already believe without critical thought. This time OP slipped up, many times it's been me.
We do need a Latin phrase for the principle of charity!
I don't see the substantial and valid point in your rebuttal. Care to elucidate in the spirit of the original point?
To take an example at the other end, should someone working in the paper clip industry be happy as long as they can afford to buy one paper clip?
I can understand an emotional reaction to people working on goods just outside the reach of their spending power. But if you think about it, those two numbers have nothing to do with each other.