Comment by vehemenz
Whether manufacturing grows, on its own or as % of GDP, has nothing to do with any particular segment of manufacturing has grown or declined, or emerged or disappeared.
As a thought experiment, you can do the same analysis with any number of technologies from the 20th century—typewriters, vacuum tubes, plate-based printing presses, analog telephones—and the point is obvious.
I didn't include typewriters on my list of goods. I only included items like cars and motherboards that were as economically relevant at the beginning measurement point as they are at the endpoint.
If you think that the manufacturing output in some of the things I listed declined or stagnated -- but it is countered by the fact that US manufacturing of other newly invented goods has increased -- then please specify what those goods are. Seems to me like the US manufacturing also lags in newly invented goods -- like drones.