I agree and yet disagree with you on this. No it is not the job of a tech to go checking up on other techs, but realizing that a lead tech cannot QC every job I feel it is the duty of a tech to report any shoddy work he encounters while performing service calls on recently installed systems. Poor quality reflects not only on the tech who did the work but on the installation company and employes as a whole, it is a benefit to all to police each other. As we were often told, the installer is the face of the company (i.e. Directv, Dishnetwork, Comcast, etc...). Theirs is often the only face the customer will ever see. If one of us does poor quality work the customer sees us all as hacks.
This is CABL.com posting #171702. Tiny Link: cabl.co/mSPy