What would Jesus do? He sure wouldn't get rich and live in the lap of luxury by making merchandise of the flock.
Joyce and her family live in opulent style on the backs of a lot of sincere people who probably don't have much but send her money anyway to support her supposed Gospel ministry. She and her family in turn live like millionaires. It's not right.
I donate to the local Christian homeless mission. As far as I know, the director is a man of integrity who doesn't feel the need to spend money donated to the mission on boats, fine furniture, lake homes, million-dollar houses, fancy cars, and a jet for himself.
If you wish to be judged by measuring up to the standard of Jesus, that is your choice. I fall short in several areas, as I am sure Joyce does. But Joyce does a lot of work spreading the word and has made a lot of sacrifices, so I am not one to condemn too easily. The money you donate to local missions is great.
Many TV preachers speak of the need to fund "the ministry" - i.e., operating expenses - when they are asking for money. When it turns out that "the ministry" includes luxury homes and a luxury lifestyle, I think people have been deceived.