Comment by MajimasEyepatch

The problem is not with opinionated engineers. (Almost every engineer I know is opinionated; the ones who are not tend not to be very good.) The problem is with engineers who are excessively opinionated about the wrong things. Having opinions about the product is way more valuable than being obsessed with writing the umpteenth JSON parsing library in Gooby because the others aren’t built exactly the way you’d build it.