Literally everyone that fought with swords in wars was considered a "samurai" during Yasuke's time. These stormfront users are going by the earlier periods when samurai was a noble status rather than by the fact that as time went on it just came to mean everyone in the warrior class.
They would be correct if Yasuke had existed before the Sengoku period, which is when the term became vague. But Yasuke's time as a samurai to Nobunaga was 1581-1582 which is firmly after the Sengoku period, making him definitively a samurai.
Literally everyone that fought with swords in wars was considered a "samurai" during Yasuke's time. These stormfront users are going by the earlier periods when samurai was a noble status rather than by the fact that as time went on it just came to mean everyone in the warrior class.
They would be correct if Yasuke had existed before the Sengoku period, which is when the term became vague. But Yasuke's time as a samurai to Nobunaga was 1581-1582 which is firmly after the Sengoku period, making him definitively a samurai.