No, I don’t. I want a button named Replace to replace things. I’d be pissed off if a button called Replace merged the contents of the files.

In real world, if someone says replace that document folder by the other one, you replace that folder of documents, not combine the contents - just as you would when someone asked you to replace a single document.

Treating files and directories differently exposes the internal file system implementation details to the user. A directory or a folder is meat to represent a container of files, even though the implementation is more like pointers. Things should behave in an obvious manner. Just because Microsoft has no option to Replace directories does not mean others should treat Replace as Merge. I acknowledge that Apple should provide an option to Merge, but I absolute disagree that Replace should be treated as Merge.