My grandparents wanted my father to go to medical school (1940s). My grandfather had a degree, which was unusual back then
Very true. My grandfather came from lawyer family who held various position in the county offices, so they had money to sent their sons to university. My grandfather had college education prior the Great Depression, but got PhD after the war. Otherwise there were no college loans and grants; education was cash only. Women had high literacy rate in Austria-Hungary but a few attended school after their 16th birthday. My grandmother went to all girl boarding school and lyceum in the 1920's and she was among a few women to had chance to do so in her time and place. People do not realize that how lucky they are now, when they attend college.
WT had not considered college education threat until much later times. There was just handful of educated people to cause a problem to WT ideology. Today education is much more widespread, but also the length of the education increases. Master's degree takes two years after four year degree. PhD and postdoctoral degrees can take even 5 years after Master's. Obviously WT does not want people to get degree when they should be spending time preaching instead doing dissertation research.