As for "that other forum," consider the maxim that "People who matter don't mind and people who mind don't matter."
I agree that there is no need to compete in ship modeling. In fact, it's of its essence a solitary pursuit subject at the least to the participant's own standards, but absent some sort of comparative standards, how does even the solitary modeler judge their own work if not against the work of others? Does a tree falling in an empty wood make any sound?
As for your preference in choosing your own subjects to model, a prerogative to which you are certainly entitled, I must agree that you surely do not need to be "dictated to as to what should be built, and what should not be built." Your catalog of completed works speaks for itself in that regard. On the one hand, I have always found your work to be particularly strong on the "artistic scale," and, on the other hand, overwhelmingly representative of what "should be built." Your focus on merchant ships is particularly valuable as a contribution to the historical record. It is my impression that it might accurately be said that you've produced more good models of ships that have rarely, if ever, been modeled than anyone else! Obviously, Mr. Chapelle's comments on the subject were directed to those whose choices were quite different from your own.