Here's what I think, further.

There are web forums for many if not all types of music. country, jazz, rock, big band, dixieland, barbershop quartets, countless more.

I get the feeling that the topic of socialism is brought up on any music forum is probably zero with the exception of some radical left-wing folk singers on a forum such as this.

In other words, proponents of socialism in the US are very few and far between.