There's a whole lot of republicans in California who probably disagree with you. More, in fact, than there are in the smallest dozen "solidly republican" states. The system, as it exists, ensures that the handful of residents who happen to live in "swing states" get all the attention of presidential candidates. Something like 12 states actually got visits from presidential candidates during the last 3 months of our last presidential election. The other 38 were of no concern to either of them. This isn't "giving concern to people with minority status". This is just a few random states who happen to have an almost equal number of republicans and democrats being the only ones that matter in a presidential election.
If we used a system of popular vote suddenly those 14 million republicans in california would matter. They'd be courted by the candidates, and they'd probably turn up to vote in significantly higher numbers. After all, why should any of us in the 38 currently unimportant states bother to show up other than some high school civics class that lied to us and told us "your vote matters." Like the lady from Parkland High School, I call BS. My vote, as a resident of California, matters not one whit.