Your linked article is rather thin and disputable ... the slab found in the 19th Century was destroyed ... maybe it
was evidence, but it certainly isn't now, it's rubble ...
From
"The Tal Dan Inscriptins" -- Biblical Archaeology Society --- June 14th, 2022
"Even though the “House of David” inscription has confirmed the essential historicity of King David from the Bible, scholars have reached little consensus about the nature and extent of his rule. Was David the great king of Biblical lore who
founded his royal capital at Jerusalem and established an Israelite kingdom? Or was David a ruler of only a tribal chiefdom,
as Israel Finkelstein of Tel Aviv University contends? Questions like these often arise from Biblical archaeology discoveries and lie at the heart of the complex relationships among archaeology, history and the Bible.
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My understanding is that archaeology and history meet the Bible in the Kingdom of Judah ... roughly 900 BC ... of the Kingdom of Israel there is nothing, no evidence of such a state as described in the Bible ... this is generally seen as a land-grab by Judah and a mythology that someone else's land is actually Judah's ... exactly like Russia's claim on The Ukraine today ...
Yeah ... if David existed, then he was probably a two-bit petty warlord trying to pick up pieces after the Bronze Age Collapse ... just more successful than most ... like our good buddy V Putin ...