Yeshiva and university are not mutually exclusive. Starting in the time of the rishonim, many Jews went to university after years in yeshiva and some became gedolim. Starting in the early 20th century it became possible to do yeshiva and university simultaneously at places like YU and Touro.
For some, university education can enhance ones Torah. That was certainly true of Rav Hirsch (who didn’t even complete a degree), Rav Soloveitchik, and Rav Lichtenstein. But university is not for everyone; I would not recommend it to those who aren’t mature nor to those whose faith is shaky.