You'd have a point if the Democratic party ever acknowledged any of that. Instead the party line has been "things are actually fine the way they are and we're on the right track". Alas, being the adults in the room doesn't get you elected because this isn't The West Wing and Republicans don't simply disagree "but share the same goals".
It literally doesn't matter how much the Democrats have prevented things from being worse in the past because their messaging is what ultimately allowed Trump to win. Twice. This isn't the 1990s anymore. People don't want stable. People are sick of stable because what has been stabilized had already not been working for them before. There's been a massive, crippling redistribution of wealth and political power in all Western economies (and the former Eastern bloc but they were less subtle about it) from the people to the billionaire class. You can no longer pretend that's not happening. At least the Republicans had the good sense to actively lie and misdirect and continue to do so while said billionaires are desparately trying to dismantle the system before it can be turned against them.
It literally doesn't matter how much the Democrats have prevented things from being worse in the past because their messaging is what ultimately allowed Trump to win. Twice. This isn't the 1990s anymore. People don't want stable. People are sick of stable because what has been stabilized had already not been working for them before. There's been a massive, crippling redistribution of wealth and political power in all Western economies (and the former Eastern bloc but they were less subtle about it) from the people to the billionaire class. You can no longer pretend that's not happening. At least the Republicans had the good sense to actively lie and misdirect and continue to do so while said billionaires are desparately trying to dismantle the system before it can be turned against them.