The whole thing to me reads a lot like, "Hey, if you want a Half Life 3, better buy Alyx or we're not even gonna think about making it."
I've no interest in VR games, and honestly, at this point even Half Life has very little draw on me. Fifteen, ten, maybe even five years ago I might have excitedly been waiting for a sequel, but now? I'm pretty much over it. Alyx doesn't excite me and, unless it was truly a radical and awesome experience, even Half Life 3 would be a wait-until-the-sale purchase for me. The original game was breathtaking and innovative, the second game was okay, but its been nearly twenty years and I've moved on since then. I can't imagine I'm the only one. Heck, there's an entire generation that's grown up without any nostalgic value to the franchise.