This is one reason I always roll my eyes when people talk about how vim keyboard bindings are so great because you don't have to move your fingers from the home row. The actual action of typing text is a small part of the process of coding.

Depends on how you work I guess. I explore solutions through coding different versions of some algorithm, sure I could theorycraft as well but I am stronger by just writing code and see if it runs. I type a lot so vim motions help me a ton.

Is anybody claiming it makes you more productive at writing code? I just find it more convenient and more comfortable.