Nålbinding and knitting are not the same. They look very similar in the finished product, and can be hard to tell apart by non-experts, but are made by entirely separate processes. Because of the difficulty in identification - because honestly, many archeologists and historians before the 1970s were extremely ignorant on the history of “day to day” folks - many items were misidentified.
Key differences: Nålbinding uses smaller, shorter strands tied together (early spinning methods = shorter bits to work with). Nålbinding works with one finger holding the stitches, the earliest knitting (which tbh, didn’t really reach Europe until the late medieval period) was worked in the round on multiple double pointed needles. What the earliest knitting looked like wouldn’t have looked what granny was doing, or either of the two videos linked above. (I tried to find a video but FUCK dpens, circ gang 4lyf)