Yes... by teaching people. Meaning you need to reach them. If the way you talk is a barrier to being understood, you're going to reach way less people, my man.

I'm gonna quote scripture, not cause I'm Christian or anything (catholic apostate atheist), but because my sister fell into a Christian cult so this is an example that quickly comes to mind (her "church" had a real goofy interpretation of this that a lot of new American Christian Cults regularly have). 1 Corinthians 14:3-8, where Paul tells the Corinthians, who were holding mass at the time in Hebrew, that they need to speak to be understood. If they hold mass speaking a language that no one outside their church understands, they only lift themselves up. But if they speak to be understood, then they can lift up everyone.

Sorry to say, while using liberal in the way you do is definitely a nice shorthand to be able to identify people who are safe for you to express your views with, it also alienates those who don't know what the historical term means. Speak Latin, dammit (that was how the catholic church misinterpreted Paul's teaching in this letter. And the new Christians use it to promote speaking tongues. Aren't religions great? /s)