The simple solution that should make everyone happy is to simply document it. That way it is no longer a hidden behavior, and the Debian maintainer could even do that as a patch without the help of upstream.
The maintainer and upstream are the same person
That might be responding too narrowly to this objection.
Then there's the question of singling out some subset of Debian users based on their country, for different behavior they presumably don't want and that is against their individual interests (see the other comment, about displaying a flag getting you beaten).
The solution is to treat everyone fairly and honestly, and to set an example for how people can get along. Imagine Debian is an international space station: the astronauts will help each other, not bicker and backstab. There are other venues for conflicts.