Is Mr. Feng Shui Geography right? .. is it credible?

Judging from what you said, that feng shui uncle may be cheating money. If he says, let me pack or buy my special Feng Shui supplies, then 100% is cheating money. If it is burial, it will have an impact on future generations. If it is cremation, it will have no impact. If all my assumptions are false and I am buried with him, you can trust him and buy a peace of mind. But if there is any disaster, it depends on life. Ancestors were influential, but they didn't die.