Tim Cook, by all accounts, can be very micromanaging and demanding when it comes to logistics underlings, but has been extremely hands-off with all his other underlings, doesn't insert himself into their loops or require his approval, doesn't decide by decree like Jobs which forces underlings to fight the bureaucracy on their own, leaves them to resolve conflicts among themselves on their own. He treats Apple like a machine or system where his role is to keep things running smoothly.
It's not "the rest of the executives", that's how Cook's Apple is run. Reportedly.
The thing is, when glass was presented the very first to cry in disbelief were designers. It is very much at odds with many industry standards.
So I really have nothing on how this came to pass. At this point, the tinfoil hat view that this design was a resource hogger as a feature for obsolescence sounds reasonable. At least there would be a method to the madness.
Regardless of whether the C-suite recognized the problem or made a conscious decision to replace Dye with Lemay, it is likely that this outcome will, indeed, result in improved UI.
In-between not paying attention to general software quality and not voicing concern, Craig Federigi should not get a free pass.
In-between kissing the boots of Kings, and dining with Murderers, and posting AI slop on Twitter, Tim Cook ought to have been more involved.
There is enough blame to pass around at Apple today among the leadership, but the specific shitty UI buck stops with Dye. Dye is putting his signature on it and is the face of the Liquid Glass demo, if he wants the primary fame, he can have the primary blame.