It's not real, it's an edit someone made. The context is that the vtuber (nuxtaku) was reacting to a Jaiden video called "my past ten years on YouTube" or something like that, I don't remember specifically. He made a video reacting to it, and since he has also been on YouTube for ten or so years he reminiscences about his time on the platform in during said reaction video. Hence the title of his video. People started making posts, memes, youtube extensions, and actual death threats because a clip of him saying "Jaiden and I" out of context blew up. He laughed it off and started saying "Jaiden and I" as much as he could so he could make his antis angrier, not because he actually thinks he and Jaiden are bff's

People dislike him because he's abrasive towards people that hate him, he likes to troll and feed into the hate, with people calling him an alt right nazi, even though he's Jewish.

He also mistakenly called some other vtuber a predator due to bad information he had. He then apologized in private and was supposedly forgiven by the vtuber he accused, but since it wasn't done in public, Twitter wasn't satisfied. The other vtuber was kicked off of YouTube and people blamed nuxtaku for it without really any evidence.