Goal #1 is just an instrumental goal to goal number #2. Socialists underperform moderates in general elections. Hell even Kamala, a terrible candidate who just got trounced by Trump outperformed Bernie (who has literally everything going for him) in his home state by a slim margin. Where as a moderate like Dan Osborn without the backing of the party outperformed Kamala by almost 14%.

Americans don't want to pay European style taxes even for European services. And our public sector is far less efficient than Europe's so we wouldn't even get European level of services for that taxation rate.