OURtorah, I’m not sure what your point was. I wasn’t judging, just stating the obvious and explicit halacha.
Gavra, I wasn’t even discussing the kollel aspect.
Sam, sorry, you’re way off base. This is not a subtle issue, I don’t see where R’ Moshe made any psychological assumptions (even if he did, his “psychological assumptions” are based on nothing but kol haTorah kulah), left room for distinctions between communities, or, in fact said anything of practical consequence which is even a chiddush.
He seems to have only written it because there was a situation l’maaseh (which, agav, doesn’t sound like there’s any reason to believe that the fellow in question came from any particular community).