I read this as whining that an administrator just doesn't want to do any friggin' work as part of their job (namely: document and prove that a teacher is negligent). Here is a study on when unions are more involved in hiring/firing of teachers, and the result is that they are far more aggressive about firing teachers than administrators.
"Nonetheless, CTs [consulting teachers] rose to the challenge - not in all cases, but at a much higher rate than principals - and when necessary, they recommended nonrenewal... The result was that out of 88 new teachers who were in the program in its first year, 11 (12.5 percent) were not renewed for employment... In the year immediately before PAR [peer assistance and review], only three teachers out of a teaching force of almost 3,000 were not renewed."
I've also seen this kind of thing first-hand. At my current job observations are done by fellow teachers (sit in my class for an hour, fill out a detailed 7-page report, have a sit-down conversation with me after I read it, every semester). At my prior job observations were to be done by the assistant dean (bagged it off for 3 years, I begged and pleaded to get something on file, he sat in on an introductory computer class for 5 minutes, wrote down a notecard-sized piece of garbled nonsense totally unrelated to the class content). In summary: Administrators are pretty lazy about doing their job.