Indeed. I mean, the Mother of all Drifts comes with the entire logographic system shifting to accommodate more and more meanings, and abstract concepts ...
... enough to support a flourishing civilization (several) over thousands of years.-
Also, the parallels with today (power, war, "leadership" ...), "our highways are covered with weed and no wine nor syrup flows forth ..." are considerable.-
Certainly. Meet the new humanity, same as the old humanity...
Cuneiform is mostly phonetic. Semantic drift didn't come from writing.