This attitude pisses me off for a number of reasons.
Not everyone can afford to move out of these states as they become steadily shittier. Smart people leaving further entrenches the conservative majority in those states, which makes it harder to flip states. It makes it easier for Republicans to control the Senate, and harder for Democrats to accomplish anything (not that they ever fucking want to). And when Republicans put policies in place that fuck over the people who can't leave, Democrats on the national level consider it to be a Red State Problem that they don't have to worry about doing anything about, because all the people who can't leave evidently deserve it for being outnumbered and not having enough money to move.
Thing is, Democrats' lack of solidarity is gonna come back to bite them in the ass. When their negligence has caused a permanent Republican majority in the Senate, those Red State Problems they didn't give a shit about are gonna be implemented at the national level. They're not gonna stay Red State Problems.