This kind of language is exactly why the whole “Red State, Blue State” misnomer has been the most effective tool of the status quo.
Joe Biden got 41% of the vote in the Kansas 2020 national election. Trump got 55%. A 14% difference is hardly insurmountable. Sure, convincing enough disaffected left-leaners that their vote matters might take more than one election, but when you stop the conversation before it can even start by writing-off entire states as “strongholds” you only ensure that the millions of people trapped in those Republican-ran shitholes will never see how close they actually are to actual change.