I'm not near 76...I was taught the right signals when I learned to drive and when I move to the US had to demonstrate hand signal knowledge to get my licence here. Electronic signals sometimes fail....if your arms fail I'm thinking it will be hard to drive although again from the number of people who never seem to signal either their arms have, their signals have or they are practicing ESP (my theory) and are signaling mentally which direction they are going...
Yes I have a problem with people not signalling
edit seems like they are still taught
https://www.dmv.ca.gov/pubs/vctop/d11/vc22111.htm