There is the social component. Along with the idea the Left has of more substantial "safety nets", they tie policies to it like defunding police, green new deals, unlimited abortion, open borders and restrictions on free speech. That's just to name a few.
Nearly everyone agrees on the need for safety nets, but the woke Left is seemingly always more concerned with "good intentions" rather than effective results. Social programs can do more harm than good in the absence of of careful consideration of the impacts on society.
You can talk about the success of the Swedish and Danish models all you want, but the vast majority of Americans don't want the culture that inevitably comes with it. And I don't see how that can be avoided. When you give government more power and control, it will always attempt to extend that control into more aspects of everyday life. If you can cite an example where that isn't the case, I'll listen. Sweden and Denmark don't cut it.