FWIW, I am no longer satisfied with the pat answer that "tuples are not immutable lists" or the "lists for for homogenous data, tuples are for hetrogenous data".

Whether tuples should grow index() and count() methods should depend solely on whether real use cases arise often enough to warrant the new methods being added.

Another consideration is that this feature request and discussion comes up so often that it may be worthwhile just to give-in to conserve our limited resources of time and brain-power.