There are always people that will have a go at anything or think that some thing is easy the fact of the matter is that the people who could train monkeys to do what they are doing could actually do that. The variation and quality of service supplied by different people varies drastically. The people who are delivering a bad service do not see that, as far as they are concerned, they have satisfied customers and are doing the same as people with years of training and a great investment in equipment.
Why should they do any different.
Peter