as a whole the claim i'm trying to make is that immigrants use English in the wrong way,
Unless you want to come across as anti-immigrant, try to phrase this differently. For example, your theme could be that it's hard, when learning a new language, to grasp the nuances of tone and meaning that are evident to native speakers. This is true whether or not one is an immigrant. Tourists, students, ambassadors... all may err when trying to make themselves clear in a second language.