Earlier quoted context omitted.
What's unfair isn't this practise per-say, but the fact that it's not equal. I think keeping hold of foreign citizenship represents an unfair advantage to some degree, as a kind of "fallback" - e.g. if things go to shit you always have the option of returning home. but other nationalities generally don't need to pay to remain citizens while they are abroad, so Americans are treated unusually.
How is it unfair to have fallback option? Is it unfair to California when someone decides to move Texas for lower taxes?
because natives with just one passport don't have that option.
> Is it unfair to California..
California and Texas are in the same country