AAQ, the gemara itself says not to learn nach “overly”. I will add that people who learn nach in yeshivos often learn it without the nesorah of gedolei yisroel; they use it to question daas torah and dismiss many teachings of gedolei yisroel. They “read” about Devorah and think that women being rabbis isn’t such a bad idea, for one example. They also emphasize the historical side of nach, often against the accepted interpretation of the pesukim. They use it to support zionism and believe it engenders love of the land (it could if you distort it that way…)
All of our ideological enemies have stressed tanach, from the tzedukim, karaites, maskilim, secular zionists, and christians…what smerel said about how to build talmidei chachamim is 100% true. The poskim hundreds of years ago said that being meshalesh learning doesn’t apply nowadays, and that gemara takes priority, both because it is “balul mekulan” and because it contains the necessary tools to pasken halacha