The problem is that some people, engineers included, think that way more people should be involved in decisions than necessary. One structural cause of that is

The problem is that some people, engineers included, think that way more people should be involved in decisions than necessary. One structural cause of that is the “nobody owns anything, everything is shared and employees are replaceable cogs” paradigm. Because then it’s suddenly a real problem that people do things a bit differently. You have to not only agree on what to do (the interface) but also the how (implementation). It would be the same problem in a band if you decided to rotate the instruments every time you jam.