I was like this up to Master’s degree (in CS, in the 90s, it was easier, there was less languages or concepts etc), I only went to courses where I knew about nothing, like Prolog/Caml which is wtf language, and the “compiler” course where you learn about LL(1) grammar, lex/yacc, I knew nothing about this and had to go to the courses. Everything else like Pascal/C/Assembly/etc I did not go. Standard cum laude.