You see those types of sites set up by hosting companies that buy abandoned/lapsed URLs. I suspect most of the text was written by a bot.
That's my suspicion as well. Companies are using artificial intelligence programs to write copy for websites, and it's become quite convincing.
An old site dedicated to vintage synthesizers had its registration lapse, and somebody grabbed the domain. They publish articles full of technical jargon that's about 90% accurate.
Problem is, the other 10% sounds credible to someone who doesn't know better and it could cause problems.