This is something that needs widely understood among left-of-center people in the days of politics as a consumer-identity. A healthy coalition has a place for people asking for longshot new ideas, contra to say, Yglesias-thought/
It's fine to be a single-issue advocate! Militant support for One Thing is a necessary job that folks have to do in a democracy! Yes, even on those "less popular than the crazification percentage" issues!