In the usual way, yes you are correct. I think the article is trying to present an alternative viewpoint, where the real Redis product is not the one that is still named "Redis" but the one that continues being opensource.

So it is a fork, but we might as well accept that what is currently named Redis will slowly (or quickly?) morph into something unrecognizable, what with the focus on generative AI and commercialization...

Honestly -- sorry, dang, but -- RTFA. You missed the entire fricking point of it. By a mile.