Yes, they were "derided" as socialist because some see "socialist" as a negative term. Socialists (including Sanders) still generally see that socialist programs, though.
> So let me define for you, simply and straightforwardly, what democratic socialism means to me. It builds on what Franklin Delano Roosevelt said when he fought for guaranteed economic rights for all Americans. ...
> It means that health care should be a right of all people, not a privilege...
> Democratic socialism means that, in the year 2015, a college degree is equivalent to what a high school degree was 50 years ago – and that public education must allow every person in this country...
> Democratic socialism means that our government does everything it can to create a full employment economy...
> Democratic socialism means that if someone works forty hours a week, that person should not be living in poverty: that we must raise the minimum wage to a living wage – $15 an hour over the next few years. It means that we join the rest of the world and pass the very strong Paid Family and Medical Leave legislation now in Congress...
> ...