Wow! This is a phenomenal layout and superb video production. (What cameras did you use to shoot it and for the train ride perpective?)
Thanks for showing us how you built various aspects and providing the "click on" references to the detailed explanatory videos. Also I appreciated giving us your sources of supply for many scenery pieces.
Most important of all you demonstrated that the joy of model railroading does not need only come from running the trains. It can be derived from the beauty of the layout itself and taking satisfaction at what you accomplished. It is really no different than an art aficionado who takes joy at looking at, and admiration for, a sculpture or artwork in a museum or one the artisan creates themselves.