Voted FI assuming we're talking about the principles behind it - public ownership, greater social equality, redistribution of wealth etc.
You are missing the most important part of the principle, democratic control of production which is probably the most Freedom part of the Ideology.
Are we talking about actual Socialism and not some American GOP boogeyman? Well in that case, then while some Socialist parties around the world are good, from an economic standpoint, it's hard not to see it as discredited.
Explain how democratic control of production is discredited?