In reality that was not the case.But I see the AV 1611 was largely in the most-modern English of the time.
In his book In The Beginning Alister McGrath has an eleven page discussion of that topic. Here are just a few snips.
"One of the most interesting aspects of the King James Bible is its use of ways of speaking that were already becoming archaic in the standard English of the first decade of the seventeenth century. By adopting these older forms, the King James Bible had the unintended effect of perpetuating ways of speaking that, strictly speaking, were dying out in everyday English speech." (p.265,266)
"The inbuilt conservatism of the translation process, reflecting the concerns of those who sponsored and directed the three 'official' English Bibles, thus led directly --yet unintentionally --to the retention of older English ways of speaking in religious contexts, creating the impression that religious language was somehow necessarily archaic." (p.269)
"...the King James Bible would actually have been perceived to be slightly old-fashioned and dated even from the first day of its publication." (p.276)