I have to say, I know the guys who were doing this training, and they are not "box tickers". They were sent to provide the best training they could. They did their best, and they made their recommendations based on what they saw. What the customer does with the info is up to them. This is not EASA or FAA.
Acting as an instructor in this type of environment, you have to ask yourself whether you have left the student more competent than you found him, and whether you have highlighted to those who need to know any serious failings you may have found. If so - what more can be asked? You know the customer is going to go and fly the shiny new helicopter whatever.