Earlier quoted context omitted.
> The United States has a federal system That doesn't prevent there being a single point of collection and distribution.
You’re absolutely correct. For income taxes many states and the federal government offset each others debts. In Canada provinces can choose to harmonize taxes or collect independently.
There is no singular place we can change how many different taxes you pay. There's... thousands? Tens of thousands? Once you factor in city, county, state, federal, special districts, etc.