I had not seen that newer Neowin article, thank you for the correction.
But Windows 365 is certainly available to business and enterprise users right now. When they roll it out to home users is a separate matter. I would add that home users are not usually thin client users, lol: even Chromebooks have a limited OS on them.
EDITED TO ADD that you might want to take a closer look at the article you linked, as Cloud PC is the name of Microsoft’s subscription OS for thin clients:
Other than AI, Microsoft is also gradually making it clear how it hopes to move Windows, or at least a major chunk of it, to the web. Back in March, Cloud PC options began to appear inside Settings. Following that, more Cloud PC-related leaks started popping up. A separate report suggested that Microsoft was working on something called “CorePC” for the next Windows version. Finally, an FTC filing revealed how Microsoft was apparently working internally to “move Windows 11 increasingly to the cloud…” (bold emphasis is my own)