It's less the developer team that did it and more the shareholders and executive team that has turned the product to complete trash.
It's so dumb, even with the AI stuff I wouldn't care that much if it was just a new thing the OS could do if the rest of the thing was actually stable. But they seem to be allergic to doing some actual house cleaning and instead keep bolting things on.
The fact that the explorer can regularly completely freeze up nowadays or flat out crash is actually insane. That should be at the top of the priority list before anything else gets worked on. But instead they decided: let's add a new keyboard shortcut to open a really laggy copilot chat interface.