So beeing unable to keep up, because your culture holds you back that is a genocide? Like somebody develops machines, that marginalize your existence until you fade away, that is a genocide?
No I believe it requires intent (possibly systemic in nature) on the part of the perpetrator. If the quakers end up disappearing and it turns out to be primarily due to their refusal to adopt modern technology that's not genocide as I understand it so long as everyone else was at worst indifferent to their plight.