As a Portuguese-speaking user, there are many more characters missing and this has never been an impediment to extracting maximum usability and fun from the beloved Zeddy. To be honest, I never missed the exclamation point (except when I was porting Super Star Trek, which makes heavy use of these signal).
Not on TF79, where the pound symbol is still present at the SPACE key
Absolutely no anti-British bias! The $ sign is not unique to the dollar, it is understood almost universally as a symbol of money and used in many currencies around the world, that's the only reason (for me at least).
Finally, Moggy is right, there are already too many serious things to worry about for us to create intrigue over something so insignificant.
So once again, my sincere apologies.