I think we can all agree that bad work will always get more notice than good work, should it be that way... no, but that is life.
Are all installers bad, I'm sure they are not. But there are a lot of bad ones out there. I have delt with only three. one was fine, but the other two were horrible. One told my father in law that he had no LOS for the sat that transmits his locals. OK I have heard of this before, but his dish is pointed at an empty field, no trees or buildings forever. So I asked him what the tech said was blocking his LOS my father said that the house across the street was the reason given... a full 45% off the LOS for D* sats. The installer thought he needed 2 dishes one for conus and one for locals pointed in 2 different directions. Mind you I live 2 miles away and get all 5 sats just fine. with one dish. I also had to deal with my recent slimline/ hr20 install. The guy installed a r15 and the slimline, I stopped him when I saw what he did and told him wrong reciever he looked and said he misread it, got me my hr20 and was leaving when I asked did he instal the new multiswitch so I could get the HD, he said I had a multiswitch aready so didn't need the zinwell, I had to make him put it in or no mpeg4 HD for me. And i noticed after he left all the extra cables were missing from the box...
Does this mean all contractors suck? no but it doesn't help their image.
If you are a good contractor, my hats off to you, slap the bad ones silly for me will ya?