As an investigator, I am familiar with the profession. My comment you cite has to do with on scene; an emotional, raw, and highly challenging format.
My problem is not the dedicated professionals to which you refer. Examination and interpretation of evidence is a fine art. My issue is with the "after the fact" partisans, the agencies, the politicians, the investors, etc. and the lawyers, not to mention the spinners.
I cast too broad a net, and I apologize....