"React as the stack"? If you're talking about the very top of the stack, sure. Not sure how React replaces .NET otherwise to be honest. Saying that the React (I assume Node on the backend) and overall JS ecosystem is stable compared to modern .NET is an interesting take to be sure :)
Also I feel that the author might have given up on .NET just at it became really good. It's been very consistent for many many years now. The last few years major upgrades (from .NET 5 I feel) have been very simple. I also had an adjustment period from older WF / EF / MVC etc somewehere around when .NET Core 3 hit, but I feel that the fundamental patterns have carried over well.
Big disclaimer: I don't use .NET on the frontend. Blazor is interesting but would probably not consider it for anything more than simple internal tools.
Seems to me that these kind of systems, by design, tick all three boxes. I've had many discussions with people that let agent systems read and act on their incoming email for instance, and I think it's utter insanity from a security perspective.
Anything that gives any sort of system access to sensitive data and lets agents carry out actions on basically unchecked input sounds like a complete security and privacy nightmare by design.
Also I feel that the author might have given up on .NET just at it became really good. It's been very consistent for many many years now. The last few years major upgrades (from .NET 5 I feel) have been very simple. I also had an adjustment period from older WF / EF / MVC etc somewehere around when .NET Core 3 hit, but I feel that the fundamental patterns have carried over well.
Big disclaimer: I don't use .NET on the frontend. Blazor is interesting but would probably not consider it for anything more than simple internal tools.