I have so far spent 35 years working in heavy structural steel fabrication. My actual trade derives from the shipyard. I have friends/colleagues who have built cross channel ferries, offshore supply vessels, the Queen `Elizabeth class aircraft carriers and intercontinental ballistic nuclear submarines. I was involved in the hull strengthening work during the restoration of Cutty Sark. We all followed drawings done by others.....
I find your belief that ship model builders must know how to loft frames ridiculous, the people that build real ships rarely know how to loft a hull from scratch.
I know how to do it, but that was only out of choice and curiosity, not necessity.
With your background, I'm surprised you would offer such an argument. Why wouldn't a ship model builder have every bit as much, if not more of a likelihood of benefiting from knowing how frames were lofted than a shipyard worker? I have never said that "ship model builders must know how to loft frames" and I don't think anybody else has either. Ship model builders can buy plans and kits that provide that done by somebody else, just like the loftsmen do for the shipyard workers in real life. What I and others have said is that knowing how to do so enables a ship model builder to build whatever they want and better understand what they are building on their own without needing to rely on purchased plans or kits and so not be constrained in their subject choices to those offered for sale by others. Moreover, a ship model builder is not analogous to a shipyard worker at all. The ship model builder may choose to only perform the role of the shipyard worker by building a kit, or building to modeling plans, but unlike the yard riveter, the ship modeler has the option to be naval architect, loftsman, and shipyard worker all in one, should they wish to do so... if, and only if, they acquire the skills of those occupations along with those of the riveters!
My comments were in response to Dave's question of whether he should offer information on drafting and lofting in his "ship modeling school" posts. My endorsement of his doing so was based on my belief that learning to read lines plans and basic lofting would enhance the modeling abilities and enrich the modeling experience of those who were starting out and stand them in good stead should they ever wish to get into to scratch building. This is the same reason you gave for learning these things in "real life:" "out of choice and curiosity, not necessity."