There's a deeply frustrating infantilisation when something is localized in the same language. My kids and I love Bluey, an Australian show, but apparently the producers had to refuse to have it redone with US and UK accents to stop it happening. Never understood what the problem with having David Attenborough instead of Sigourney Weaver narrate Planet Earth was either.
The Aussie themes have even led to some history lessons in our house: a handful of episodes reference Australian soldiers (including Bluey's grandpa) which led to my kids asking what wars Australia fought in. Queue the (very) gentle introductions to WW1 and WW2, and the Pacific War specifically.