This essay suggesting that “it’s time to replace the genetic blueprint idea” seems to be confounding the genome itself with its expression. For while the genome as a whole only implicitly and incompletely specifies the overall structure and behaviour of an organism, it does basically comprise a library of what are almost literally (and certainly much more than figuratively) actual blueprints for component proteins which fit together like a jig-saw puzzle (though perhaps one with more than one “solution”) to create parts including organelles and ribosomes which open successive volumes in the library and continue the process of expression to construct ever more complex parts which eventually culminate in the entire organism.
So, although I empathize to some extent with the political motivation here, I think that, as often happens, the desire to correct an overly simplistic interpretation has through its own overreach led to a less than credible attack on the basic validity of the metaphor.
Source: Why it’s time to replace the genetic blueprint idea | Aeon Essays