Even that isn't true. Lots of original models/drawings have been lost, new designers interpret or reconstruct what they think Gaudi wanted to do, based on incomplete plans or where decisions weren't fully made.

Not to mention new materials are available today that are being used and new processes/workflows which change the results slightly too.

Sagrada Familia isn't a 100% implementation of the original vision, as even the original vision was incomplete when Gaudi died.

Ok, maybe he didn't specify how all the statues, doors, windows and other embellishments should look like, but the basic structure and shape (the three portals and the 18 spires which also determine how the support columns in the interior of the church are placed) is the same as in Gaudí's original plans.

Buzzword bingo isn't restricted to software. The statement just says "Gaudi was a great architect". But it sounds more impressive to talk about "posthumous collaboration", especially if you don't analyze it.

Sometimes people say things indirectly.

In this case what they are saying is that Gaudi’s design sense is so unique and iconoclastic that it’s essentially impossible to mix it with other styles of design.

The original statement still makes sense, though, if you correctly interpret it as critique and warning.

> Sagrada Familia isn't a 100% implementation of the original vision

That's what makes it more interesting and fascinating.