Honestly I've never understood this argument that choosing types is too complicated. Most often I've seen it come from people without much experience in statically typed languages and imagine that having to determine the type will be difficult.

After becoming familiar with the code base or library, particularly with modern IDE's it's rarely taken more than 10 seconds to choose a type. When reading another person's code, it does take some time to map out the relationship between the classes, but unless your code is in one giant file/function/object you're going to have to figure that out anyway.