I typed a long refutation of this theory before deciding to back theory up with facts by looking up a study. https://userinterfaces.aalto.fi/typing37k/resource

I typed a long refutation of this theory before deciding to back theory up with facts by looking up a study. https://userinterfaces.aalto.fi/typing37k/resources/Mobile_typing_study.pdf https://userinterfaces.aalto.fi/typing37k/resources/Mobile_t... > Finger usage: Participants who reported to use two fingers were significantly faster than those who used only one finger (M = 37.7, SD = 13.2 versus M = 29.2, SD = 10.7, p < 0.001, d = 0.66). A closer look at the reported typing posture shows that the use of different hands and fingers had a significant impact on performance. Over 82% of participants typed using two thumbs. Confirming the findings of prior work [3 , 7], this was the fastest way to enter text Turns out I'm weird it seems you should and indeed most people do use two thumbs. Given that fact your theory seems extremely plausible.