Does the death of a father in the restroom, despite his sound mind and devotion, and the existence of family disputes over inheritance, indicate a specific meaning?

You must have a good opinion of Allah and of your father, who performed the prayers and made the pilgrimage to the House [Kaaba]. We ask Allah that the illnesses which befell him be an expiation for his sins. There is no text indicating that dying in a bathroom is a punishment or a bad ending. Your father's brothers boycotting him is a sin, and they must repent. However, it is not permissible to deprive them of their inheritance or reduce their share. The entire estate must be divided justly among all heirs.