Someone on a salary that barely covers his living costs has a powerful incentive to deny the truth.
Faced with the choice of personal financial pain or lying, most people go with the latter.
Most people prefer earning a salary to doing the right thing (ie: whistle blowing).
As a rule, don’t expect someone who earns a salary to tell the truth regarding his industry.
He is motivated to lie to himself and others.
(Summary of extract of Nasim Taleb’s Skin in the Game. Highly recommended reading.)