Can you expand on why/where Guido was wrong beyond why he cites where he (and the core team) made mistakes in the linked talk? I'd disagree about the "need", as

Can you expand on why/where Guido was wrong beyond why he cites where he (and the core team) made mistakes in the linked talk? I'd disagree about the "need", as the fundamental changes (meaning non-package renaming changes) were pretty important for the increasingly international economy we are in.