DC Democrats argue ranked choice voting is confusing to voters in predominantly Black areas as they seek to block potential vote on implementing the system
I don't think Republicans particularly care for ranked choice either - as it is a far better gauge of popular opinion than the first past the post. However, the Democratic party is the first bulwark against actual reforms in the American system. It's not surprising they are being borderline racist in their opposition to it.
They fairly loathe it. They are relying on low Information voters, suppression , and gerrymandering currently. Ranked choice would decimate their ranks. That said the fact that Dems want to cherry-pick the areas they support this in reeks of malfeasance.