Lots of satire is based on true events, that doesn’t make the article itself true. There is no music scholar “Aiden Lawrence”, the quotes from that person are made up.
Metalhead Tony Garcia is also made up to illustrate the joke. The true part is that Ozzy Osbourne tweeted with a good take. The reactions to it are fake to illustrate the authors joke, which is that an old rock legend having a good take on a rap artist is rare.