Well, I think the grandparent is thinking of charities whose owners rake in millions; the expectation is that people working for a charity do it for charity, moreso than making a lot of money; everyone should get a fair wage, of course, but it does seem like a lot of the people at the top of a charity earn exorbitant wages.

Then there's where the money goes to. Is it a charity that does good work, or is the money going into people lining their pockets? I believe famously that relief funds for Haiti, New Orleans, or the tsunami were mismanaged, stories like millions being donated but only a dozen houses being built. I found [0] which breaks down where the record 6+ billion dollar that went to the tsunami relief ended up at.

[0] https://www.theguardian.com/global-development/2014/dec/25/w...