I don't think this is about flexibility. It's more about culture. Software engineering culture does not value simplicity, and actually seems to value complexity. Other engineering cultures place a lot more value on simplicity, and its associated values of reliability and risk mitigation.
A civil engineer can build you that building, but they will think "what a ridiculous architect." With a software engineering mindset, they would happily build that building for you, and invent a new type of concrete mixed with titanium flakes to do it for you. And then they will go on a decades-long campaign about how titanium-flake-concrete is the Next Big Thing and that anyone using normal concrete is a simpleton.
A civil engineer can build you that building, but they will think "what a ridiculous architect." With a software engineering mindset, they would happily build that building for you, and invent a new type of concrete mixed with titanium flakes to do it for you. And then they will go on a decades-long campaign about how titanium-flake-concrete is the Next Big Thing and that anyone using normal concrete is a simpleton.