Sure there is a logical reason for why you don't want your function to be 4000 lines long. It gets unwieldy and becomes mechanically hard to manipulate or even understand the full meaning behind all 4000 lines. That's a logical argument. I completely agree with the soft limit.

But you stated that this function name:

   find_xy_coordinate_of_dogs_cats_and_baboons_in_picture

needs shortening.

There is no logical reasoning that can justify shortening this function yet the feeling is strong. That is the bias I am trying to illustrate. There is, in fact, nothing wrong with not shortening this function and keeping it as it is.