Feynman famously suffered from this so it's hardly just computer people.

I spent some time in drug design, surprised at how stupidly things were done in the life sciences. Of course once I was immersed in the field I discovered that many of those so-called "stupid" things were quite rational and even most of the ones that were the result of legitimate path dependence, and not really so stupid as to be worth changing.

I also learned that people in the field had already thought about this and the current state was a result of people trying to fix procedural/cultural bugs.

Of course the residual of subtracting all those "many" things that turned out to be legit still left a few stupidities and tweaking a couple of them was enough to make a big difference to our startup.

Also: our own field (I'm back in computing) is full of path-dependent oddities and wholesale cargo cutting as well. I think it's human nature.