I do think that at least the Native Americans adopted new technology as it became available, such as steel points and hatchets, and firearms, etc. I have no problem with using tower tools for the tedious prep work such as roughing out, and shaping. As I may be about the oldest "newbie" around, my opinion may not sway anyone, but the end result is a primitive bow! Linen strings were in use in Europe, silk in Asia, for centuries before the white man got to the "new world"! The self bow as a finished item is classed as primitive, I believe! How it is made is a matter of personal preference!
Hawkdancer