Why is the copy method name in python list copy and not `__copy__`?

[YouHoGeon]

Why is the name of copy method in python list copy and not __copy__?

As a result, I confirmed that separate exception handling logic was written for list (or dict, set, bytearray) inside the copy module.

#  https://github.com/python/cpython/blob/main/Lib/copy.py
def copy(x):
    cls = type(x)

    copier = _copy_dispatch.get(cls) # Code for a list that does not have a __copy__ method.
    if copier:
        return copier(x)

    # ...

    copier = getattr(cls, "__copy__", None)
    if copier is not None:
        return copier(x)

    # ...

_copy_dispatch = d = {}

# ...

d[list] = list.copy

This also applies to the __deepcopy__ method. (Even though list has a list.copy (not __copy__) method, there is no list.deepcopy method, so the copy module implements it.)

def _deepcopy_list(x, memo, deepcopy=deepcopy):
    y = []
    memo[id(x)] = y
    append = y.append
    for a in x:
        append(deepcopy(a, memo))
    return y
d[list] = _deepcopy_list

I am curious about the following:

Why is the copy method name in list copy and not __copy__?
Why is the deepcopy logic of list implemented in the copy module and not list.__deepcopy__?
I think that if list had __copy__ and __deepcopy__ methods, the exception handling code in the copy module would go away and consistency would be maintained. But there must be a reason why that wasn't done, and I'm curious as to why?