No, that subway was definitely real as well, on what used to be the city circular line. The guy missed a few of the locations such as the Oracle apartment, which is actually an apartment building in Redfern.
Although saying that I appreciate your deep reading of the film to correlate the green tiles in the kitchen as indication the oracle was more machine than something else. Or at least more part of the system. This is interesting and I think a great deep reading of it.
At the same time I also recall multiple older style kitchens that I’ve been in while growing up or renting in my early 20s that in Australia had these kind of green tiles in the kitchen. It’s quite a popular aesthetic there.
Just a meta comment here: I really like how we’re discussing in these threads whether the locations of the film the matrix are real or fabrications ha ha ha ha