^^^ Just watched those too. I can get lost down a rabbit hole watching fun GCN videos.
The new bike vs old bike video's climbing section seems like the most directly relatable portion considering CX and I'd say 10.1 percent is plenty to make a difference in a race – especially under closely matched competitors. I know I don't want to be dragging around 10 extra pounds.
That said, my bike is 18 pounds and I'm not stressing about dropping any weight. It seems 2 or 3 pounds could easily be made up through fitness. Tubulars and disc brakes – on the other hand – are on my mind.