(I said that so Gavra won’t yell at me about tuition breaks.)
And so I will not. I actually agree with you here. If the couple is being supported by the Shver, that is the Shver’s problem (or delight, as he can leverage that into the couple living near him and get Nachas from the grandchildren), not the Klal’s. As such the Ramabam would not apply.
To be Melamed Zechus, it is difficult to say that a kollel boy who is being supported so that he can “start his life in learning” and is just “putting in time” is considered to be “Rabbanan” (As in “Ma Ahanu”).