Yes, language is a barrier while communicating with others. Especially if they do not speak the same language as you. I do not even understand why this is a question. Someone speaking a completely different language than you would obviously be a huge barrier in any sort of attempt to communicate with them.
Everyone encounters communication difficulties, often stemming from language differences. A langauge barrier can be the invisible force that can be quite difficult, if not impossible, to overcome. Frustration can overtake, and that is hurtful to both sides. Nobody wants to be left out of something because of language differences. As someone who grew up in multiple countries, I can tell you that language barriers can be painful at times.