Point taken-- but you have to put them in context-- you should know, that when the A/ M studios put them into their syllabus, back in the late forties, the majority of the clientele were ladies ( and couples, guys) in their senior yrs .

They were constructed to suit a social need and were adequate for the task at hand .
Ironically, the original format, taught at that time was much closer to the more " authentic " style.
The competetive world soon changed that !! ( as they did with most all dances ), and in so doing, it gradually influenced the way, the social level dances were being taught.

Progress ??-- you be the judge .