to be fair the quote you quoted says "popularised most famously by Chuck Berry" which is pretty uncontroversial I think, no one claims he invented it Sister R

to be fair the quote you quoted says "popularised most famously by Chuck Berry" which is pretty uncontroversial I think, no one claims he invented it Sister Rosetta Tharpe is awesome but T-Bone Walker is probably the more direct antecedent for Chuck Berry's guitar style and stage moves