BS”D
And most importantly, the roots of the old MO are very simple:
1) Assimilation.
2) Sofek – doubts that real Torah Judaism can continue in the US, which have long been disproven.
Oh, and as for self supporting Torah institutions, with the exception perhaps of Bikur Cholim NO modern donors support Satmar for many reasons. Yet, the Satmar community is one of the most self sufficient and successful communities out there (and no, they’re not all on welfare, that is ridiculous).