S3 Gateway endpoints break cross-region S3 operations. Changing defaults will break customers.
And if there are any interoperability concerns, you offer an ability to opt-out with that (instead of opting in).
There is precedent for all of this at AWS.
This is breaking existing IAAC configurations because they rely on the default. You will never see the change you're describing except in security-related scenarios
> There is precedent for all of this at AWS.
Any non-security IAAC default changes you can point to?