> What is the software equivalent of spacing studs interspersed with fireblocks that we're not doing?

You're comparing apples to hockey pucks. For the analogy to hold, you need to specify what industry the software is for. i.e., if I'm building a garden shed, I don't need a specific stud spacing or even fireblocks at all. Hell, I can build it from raw timber if I have enough of it.

That doesn't really sound like an invalid analogy, you just don't need the same fire code for all structures but there are still fire codes that apply to building sheds.

I'm not sure what your point is. Like, ok, you came up with a structure that doesn't need a lot of structural engineering but clearly others do. So what are you trying to say?