Views on this have changed in recent years, according to Pew Research Center surveys. In 2019, 57% said people overlooking racial discrimination was the bigger problem, while 42% pointed to people seeing it where it really didn’t exist. That gap has narrowed from 15 to 8 percentage points.
We shouldn’t ignore rural voters entirely (which I don’t think anyone is saying). I agree that they are overrepresented and that’s a major problem.
We also have places like DC and PR that basically don’t get any representation. And big states often don’t get nearly as much representation per population as small ones. The US is extremely undemocratic with how they chose to implement things.