Wouldn't it be better if you knew about all the current registers first then learn about older types? I learned like most people X32 first and I feel like I still read X64 relative to X32.
As a newer developer this is a problem I've had with computing in general - a lot of newer languages, web frameworks, etc. are solving problems that I only understand through seeing what came before me. For example - why should I care about memory ownership if I've never tried to write a large-scale C program?