I'm fully willing to accept at face value his reasoning but we wouldn't even be discussing this again if there wasn't yet another blog post telling us how we all have it wrong.
My advice to Antirez is to just leave this alone for a month and I doubt anyone will still care in a week.
To you Redis is an independent open-source project, to which Redis Labs generously donates your salary so that it you can work on it full time.
But to most people online, that is not immediately obvious: because of the company name, you working at Redis Labs, and them being the main sponsor, Redis is seen as the "open-source core product" of Redis Labs. https://redislabs.com/community/oss-projects/ also strongly leaves that impression - it even says that to contribute to Redis you have to sign the contributor agreement with Redis Labs.
Once you have that impression, it's natural to assume that Redis + Redis Labs modules are part of one product family, and that the roadmap for both is being planned based on the business goals of Redis Labs.