Biblical opinion

First of all, it is important to remember that Da'at Mikra was written by several different people. Therefore, as is the way of things, there are good writers, and very good writers (for example, Amos Chacham), so it is important to pay attention to this.

From my not-so-great experience, when you study with the commentary long enough, your mind already manages to summarize some of the interpretations and precisions that are going on there straight to the ”bottom line” pretty quickly. But this is a personal experience, so that's a guess.

Excuse me, I don't argue with your personal feelings, but to say that there is no value in studying the Tanakh is a rather strange statement.
From a systematic and in-depth study of the Tanakh, you get so much, I will try to summarize.
1. First of all, there are several halachic issues such as the borders of the land, (the Babylonian and Egyptian exiles, the Promised Land, Joshua and Ezekiel, etc.) the dimensions and shape of the Temple, identification of sites, plants, conversion, and more that must be studied in depth as part of studying the issue in the verses of the Tanakh.
1. A correct view of the essence of the Torah, which is not a ritual religion aimed at pleasing God through sacrifice, but rather at first correcting ourselves and society. ” Why do I need a wise rabbi” And more..(and this has great significance in our day)
Or the reality that there is a prophet who performs miracles and yet it is forbidden to listen to him, how important it is in our day that there are people who follow all kinds of dubious figures
2. Understanding the main things in the Torah that the prophets cry out about - correcting the community and caring for the weak, keeping the Sabbath, etc.
3. We see that the situation among Israel was not morally alarming during the time of the judges and prophets, yet the prophets did not disconnect from the people, tried to correct them, and with Zac they respected the monarchy
4. The relationship between the power that the king has and the prophet - Nathan rebukes David, Ahab needs to stage a trial to take Naboth's vineyard
5. Understanding the essence of Judaism as a nation living in its own land, the return to the Land of Israel, the blasphemy that comes from the fact that God goes into exile, and the connection of God to His people despite all their sins.
6. Learn a complex reality of how long it took for the people of Israel to establish themselves in their land.
7- See that even righteous people can sin and correct their ways
8. Learn faith and morality from the words of the prophets and wisdom literature, the meaning of prophecy in those days
9. Connection and connection to the land that learns the descriptions of the places, trees and stories that were there. This gives a deep connection to the land.
10. Of course, a deep and correct understanding of the Midrash of Chazal that understands the meaning of the verse and the context
11. Especially dealing with the verses of the Bible. There are many issues, both halakhic and faith-based.

There are of course many more, and probably we don't always see the importance of studying immediately, but those who study over time in a thorough and systematic way suddenly put what we receive (and of course the main thing is Shas and Poskim).

I won't go into these discussions again here. I've explained and answered everything many times already.