I take your point, but my issue is in the careless use of adjectives.
I am an airline pilot, I fly an Airbus full of folks from one place to another. Some folks pay really good money for a ticket on one of my flights. I've done this for nearly 30 years.
I'm fine with a first class passenger who paid top dollar (or a steerage passenger paying pennies for that matter) saying "I flew into Boston". What I would find peculiar is a passenger saying "I flew that Airbus into Boston." It's just a few words, but words can change whole outcomes.
The passenger went to all the trouble to plan his trip, book the tickets and work for the money to pay for it, no argument there. But his skill is not what landed it safely at Logan through ice, clouds, traffic and craziness. Semantics, yes. But hardly classist.
Similarly, I'm a pilot but when I fly somewhere as a passenger I don't claim credit simply because I possess the skill to do it myself.
Taking credit for planning and managing a restoration is miles away from taking credit for the skills necessary to actually complete the restoration.
As for the father analogy, even historical revisionists realise that a baby cannot gestate in man's body. So all the "I did it" rhetoric is heard through this knowledge. That's the key difference between that and a guy with a Collins Brothers Jeep saying "I built this bad boy"; there is no general knowledge as to his capacity or ability. Thus one is hyperbole and one is lying.