But the ideological subgroup specifically who throw around "listening to other viewpoints" a lot tend to be the kind who seriously engage only with view points comfortable to them. As in, there is talk about uncomfortable viewpoints, but their idea of uncomfortable viewpoint is someone telling them they are superior and they disagreeing cause they are more egalitarian. Which is not uncomfortable at all.
Listening to other viewpoints is like invoking Crocker's Rules. You can't invoke the rules on other people. Only yourself.
You just don't have the information to determine whether you're worth listening to. Because you will always think you're worth listening to.