Why is it these articles always paint things as "broken" which were intentionally designed that way, with known concessions?
I think your criticism of the article falls flat. In its own words:
By taking advantage of American democracy’s design flaws, Republicans secured an edge.
The larger question is how a democracy can be designed (or reformed) so that the real interests of its constituents are accurately embodied, Gerrymandering is merely one mechansim used to further the entrenchment of aristocratic elites. FPTP is another.
Last I checked there weren't specifically 2 preformed red vs. blue ideologies. Even playing into the fossilised/antiquated party system, where are all the green and yellow (libertarian) representatives? (To take the smallest step within the bounds of specifically representative democracy.)
And yes, I am deliberately just dipping the toe into the water.
My criticism is that it's arguable those are not design
flaws - there is bias is in calling it a flaw. If they had said "these tradeoffs have proven to be easily abusable" or something, I'd probably not comment on it. Much of the media makes statements of unfounded certainty, and this is one of those subtle times.
For example "electoral college is bad and has to go" assumes that having something that puts states on equal footing, instead of people, is a "wrong" choice. I think it's a good tradeoff personally, even if it has outcomes I don't prefer. As far as I can tell, the office of President was not set up to represent the people - it was set up to represent the States.
Re gerrymandering: I'm not defending the practice. I'm just saying you can't fix it in a universal sense. At best you can maybe have some computer program find some kind of "most uniform distribution" districting, or pass laws that prevent the people currently in power from drawing the districts, but even that is going to suffer from how you weight the various parameters.
Most fundamentally - other than convention, why do we use geography to define political borders in the first place? It's not as arbitrary as it might seem on the surface.