Nah, it'd be like Kakashi teaching Chidori to a single student. Look at all the mutts in Boruto's gen. Pretty much all them were taught what seems to be basic sealing. There's really no reason for why she didn't teach any one of them genjustu aside from pointing at the sharingan's existence.
That is the academy
Likely Kakashi rammed up the qualifications of the academy post the war, compared to the past academy that was barebones in education. (didn't even have the chakra feet training let alone mechanics, sciences, etc...)
Especially since it is a time of peace now and the kids (who don't want to be ninjas) use the academy as a stepping stone for getting into good schools, universities and careers.
The comparison for teams is like if Gai/Guy taught Neji or Lee far range attacks when they are CQC specialist but compared to Team 3, Team 8 had each member being a top of the line tracker too, plus Kurenai later became pregnant and went on leave.