Agree. No archaeological remains in Jerusalem can be dated with certainty to David's time. The stepped stone structure on the east side of the city of David, long credited to David or Solomon, is now thought several centuries older, though it may have been repaired in the 900s BC. Warren's Shaft, found in 1867 and often taken for the "water shaft" of 2 Samuel 5:8, is now read as a natural crack that never carried water.
The evidence that does exist is indirect. Israelite sites from the 900s BC hold fine imported pottery from Cyprus and Phoenicia, and iron goods, luxury items that fit the trade with Tyre. There are also dozens of small forts in the Negeb, the dry country to the south. A king over a modest kingdom fits that picture; the dating of the buildings is where scholars still disagree.
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