They do because they're a group that looks for poor countries in need of loans and offer these loans and wrapping it all in a pretty packaging by saying they wantthe world to prosper and countries to realize their goals. It's all a bunch of lies. They're a business.
What would people say if you were going from one poor neighbor to another, picking people in trouble like addicts, people with ongoing court cases and such and offering them loans with extreme conditions like you'd take a room in their apartment and use it for whatever you like if they won't be able to pay in time. People will say that you're abusing them. That you're just a leech and a crook.
When they're doing it to whole countries it's somehow a different thing.