Do tall tales have morals

Yes, but you might want to see what morals they have before you decide to enact that moral in your own life

Additional viewI fully agree on the above. I just like to add that if you are keen to know the morals per religion teachings, it is easier to get them from the relevant holy books and prophet teachings and sayings. For example, Quran includes lots of stories and tales of individuals and nations that give you good models for morals. Refer to related question below.