As for Americans and British - both of which mix nicely on this board - I certainly don't let the opinions or the grammar of one person dictate my perceptions of either country in The Special Relationship.
I know that not all Britons think that Americans don't care.
And I know that the poor language skills and fanatical views of one Briton are not a blanket condemnation of 1) the British education system or 2) the mental well-being of the British nation.