I get your point, but I think that's a poor example. I've been around plenty of Plumbers, Mechanics, Contractors, and Electricians. You're almost guaranteed a comment or remark about the previous guy's work.
I didn't say it doesn't happen, but I for one never experienced it, I saw zero churn and posturing or kool-aid. I guess plumbing got more professional the more widespread and crucial it became, while software is just getting sloppier and more bloated.
