Edit: Assuming English of course. But a cursory glance of other languages shows that the frequency is not much better, if at all. French 'B' has a frequency of only 0.9%; Finnish is the lowest at 0.2% and Turkish the highest at 2.8% - but still, relatively low. So why bother optimising for a letter you rarely use?
Yes, it should be typed with either the left or right hand.
But that's also kind of ableist, isn't it? It should be typed with whatever suits your particular use case. This holds as true even for people using two hands to use a QWERTY keyboard.
[1] https://en.wikipedia.org/wiki/Letter_frequency
Edit: Assuming English of course. But a cursory glance of other languages shows that the frequency is not much better, if at all. French 'B' has a frequency of only 0.9%; Finnish is the lowest at 0.2% and Turkish the highest at 2.8% - but still, relatively low. So why bother optimising for a letter you rarely use?
But that's also kind of ableist, isn't it? It should be typed with whatever suits your particular use case. This holds as true even for people using two hands to use a QWERTY keyboard.