Quality issues, especially with new models, are a nemesis for the manufacturer trying to retain and improve a reputation for quality and reliability. Quality issues are a major headache for the dealer organization because they shoulder most of the blame. The consequence is a dissatisfied customer base. Having a good dealer is one heck of an asset.
The problem for the manufacturer comes not only from in-house issues such as poor workmanship and inability to retain qualified workers, but from the supply chain as well. Granted, the customer pays for and expects zero defects. However, look at the variables introduced into the manufacture of, in many cases, a semi custom craft. Things happen that should not, and customers get upset. The dealer bears the initial aftershock of the customer's dissatisfaction, and a good dealer will do his best to correct a problem. Subsequently a good manufacturer will stand behind the dealer and the product being produced. Te old cliche is that a dissatisfied customer will tell six of his associates about a bad experience, and a satisfied customer rarely says much to anyone.
The dealer and manufacturer cannot address a problem until they are made aware of it. The dealer then has to consult with the manufacturer, and the manufacturer gets to deal with all the related links in their supply chain. For the customer to blame the manufacturer for an electronics problem or defect as an example is not always focusing the responsibility in the right place either. Sometimes it pays for the owner to have a degree of patience in arriving at a final solution to a problem. Understandably they don't because they paid big bucks initially, and they don't want to be denied use of their boat or any of its functions safety related or otherwise.
Now, if a problem develops, and the owner has the knowledge and ability to fix it, then by all means do so. Then document it for both the dealer and the builder. Don't just complain about it.
As a disclaimer, I am neither a dealer nor a manufacturer. I understand the issue from a customer perspective as well as the dealer and manufacturer. I was fortunate in that I bought my boat from a dealer with a great reputation, who went the extra mile in correcting teething problems, and my US built boat had very few of them. Sure, there were things that were not right, but it was easier to correct them myself than to complain. (The only exception to that is the head, supplied by a manufacturer who shall remain nameless.)