Why the application is mailed
Giving Center used to take requests through a form on its website. Several sites that list free stuff and giveaways added that form to their pages, and the volume stopped being something a person could read. Real requests from people in genuine trouble were buried underneath it. The form had stopped working for exactly the people it existed for.
Moving to a mailed application changed that immediately. Every application that arrives now is read by a person.
We know what this costs
Printing a form, filling it in and finding a stamp is harder than clicking a button. Someone without a printer at home has further to go than they did before, and there are people who could have been helped who will not get through. We are not going to pretend otherwise.
What the effort buys is this: your application is read rather than counted, and nothing about your situation is judged by a filter or a queue position. If a library, church, school or community center is nearby, most will let you print a form and many will have stamps. A case manager or social worker can also apply on your behalf.