The yeshiva model of depending on charity does not work. It ends up baiting naive college students making them think "we are all one happy family" while spitting them out when they are no longer useful or their rich parents no longer want to support them. And it shames the name of Torah to have the disgusting creatures at the head of the hierarchy.
Whether using the Torah for money like kollels do is permissible according to the Torah [or not] is not the question. Maybe they can find support for this practice in some achronim [later authorities]. Fine. The point is that it does not work. It makes a highly perfidious system with the worst kind of slime at the top of the hierarchy.
Yeshivas should make it clear from the start that Torah is not to be used for making a living. Everyone should learn a decent vocation as part of the program.