Comment by yellowapple
6 hours ago
As someone who uses and loves Unexpected Keyboard: the higher learning curve compared to other keyboards would be the main reason I can think of. The reliance on swipes in particular is something that's likely alien to a lot of smartphone users.
On the other hand, I use Thumb Key (https://github.com/dessalines/thumb-key) and think Unexpected Keyboard doesn't go far enough.