And indeed districts can be quite fairly distributed, rather than gerrymandered, in such a way that they cover different parts of a zip/post code area.
Although cyberwarfare and technological vulnerabilities that affect ballot collection and counting seem to be more potent than gerrymandering at this point, with modern elections.
Gerrymandering probably still matters in swing states like Ohio and Florida, but only if modern tampering methods have been ruled out everywhere else.