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That's exactly the context of where this quote comes from. He wanted to introduce Unified call syntax[1] which would have made both of those equivalent.

But he still has a preference for f(x,y). With x.f(y) gives you have chaining but it also gets rid of multiple dispatch / multimethods that are more natural with f(x,y). Bjarne has been trying to add this back into C++ for quite some time now.

https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n44...

What are the limits on Retroaction? Can Retroactive changes revise history?

For example, if I change the code / transactions in a step, how do you reconcile what state to prepare for which transactions. For example, you'll need to reconcile deleted and duplicated calls to the DB?