Does fortune-telling and geomantic divination count as eating a meal in the underworld?

It's not a grave meal, but revealing the chance of death has five disadvantages and three shortcomings. Many truly capable people have no sons, and some simply die. There are relatives in my family who are in this line of work and really worship the teacher. What his teacher said is quite accurate, but he was blind the day after tomorrow, that is, he became blind after he started learning this, which may be a price.