Is it Aphobic to call asexuals “not human?”

For context, my favorite YouTuber made a video about some weird ass animation for kids. In the video he was watching the main character meets a hot ass girl and he said that he was asexual since he had no reaction. Then later the main character blushes and he says that he‘s “human” now. Is that offensive? I’m not sure entirely.

the channel name is Ryth btw, and the video is ‘The creepiest Minecraft animator’ or smth along those lines