Well said WellInformedYid. Giving a Haskama is fine, but Rabbanim are being used as milk cows. Tzedaka organizations need to have enough self confidence to be proud of what they’re doing and suggest people donate based upon that. If we can’t donate money to tzedaka-good causes without these promises we’re in very poor shape.
They’re are enough promises in Chazal about the merits of tzedaka, without going over board. Unfortunately, these practices remind me of Angelican faith healing.
I was learning one morning, when someone saw a certain sefer being displayed for sale. On the advertisement the paper said, the Gedolim held it was an obligation to buy the sefer. No, it wasn’t anything halacha lemaysa, and might have been an excellent sefer as well, but the Yungerman, commented, maybe he should have added, what a statement “no one she donate less then” etc., like what is done with charities.
Just a final comment. I believe Hidabroot and other organizations do excellent work. Comment is only regarding the approach.