I’m not sure who donates to who
but as a person donating to a charity I would expect my money to go to that Charity as in If I donate to guide dogs for the blind I would stop donating if I found my money was then being donated by that charity to another charity as that would be sharp practice and risks further support from disgruntled donors
just like the WWF instead we don’t “ adopt an animal” to raise funds we “adopt a car for three years” to raise funds