Definition of trolling is "make a deliberately offensive or provocative online post with the aim of upsetting someone or eliciting an angry response from them". Anyone expressing their views, as outlandish or infuriating they might be to you, without the intent of provoking, isn't considered a troll. Now if you believe his posts are with that intent in mind, then by all means, label him a troll. If you're just infuriated how someone can possibly have such views, either refute them, rebuke them, or simply ignore them. Labeling a troll or calling to ban him is simply cancel culture.