These are dang short compared to Java's FooBarBazBeanFactoryFuncClassImpl. The point you may be responding to is that "Short variable names" are themselves contextual. If you're doing a simple loop:

  for i := range personlist {
    person := personlist[i]
    ...
  }

Is more readable than

  for personNum := range personlist {
    person := personlist[personNum]
    ...
  }

because it makes clear that the i is basically irrelevant. The latter isn't bad style if you're three loops deep, because i, j, k is a bit harder to keep track of which is which.