From my experience, no, people do not appreciate the time it takes
Living in a family with neurotic cake decorators (the last birthday cake took 3 people 1 week to make) I've seen the reactions. There are the assorted oohs and ahhs when the cake comes out, but most don't appreciate the work, creativity, time, and engineering, that go into making these architectural carb masterpieces.
And while I appreciate all the work since I see it, for me, after it is presented, just give me a slice of coconut layer cake filled with lemon curd and frosted with seven minute icing, or a slice of carrot cake with cream cheese icing, etc.
I hate all that fondant that goes into the build.